5.5.1.15. Mixture of AND and OR - bracket replacement

	Note
	Space has the meaning of AND AND has higher priority than OR Parenthesis has higher priority than AND and OR

Examples:

Wanted: A hexagon head screw with either M10x50 or M10x60
```
Hexagon Bolt ( M10x50 OR M10x60 )
```
is equivalent to
```
Hexagon Bolt M10x50 OR Hexagon Bolt M10x60
```
If you simply omitted the brackets in the first case, the results would be much less clear.
In English, "bolt" is sometimes used for screw and sometimes "screw".
Search input:
```
Head Cap ( Bolt OR Screw )
```
Wanted ISO 4762 or ISO 12474
Search input:
```
ISO (4762 OR 12474)
```
Wanted: Cap screw with strength 10.9 or 12.9 (Whether the values for strength are in the link database or in the characteristic attribute table is irrelevant).
Search input:
```
Cap screw (10.9 OR 12.9)
```
We are looking for a component with two different length options
```
Hexagon Bolt (L=380 OR L=400)
```
We are looking for a cylinder screw with an internal multi-tooth or a hexagon head screw with a thread almost up to the head and at the same time an entry "HiHo" or "Hello" should be found (in the link database).
Search input:
```
( Cap screws with internal spline ) OR ( hexagon screw thread approximate 
 to head )
(HiHo OR Hello)
```

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5.5.1.14. Logical operators	Home	5.5.1.16. Search options for ERP integration