Perhaps you should try some spelling variations:
thuoc bat » thuoc ban, thuoc bao, thuoc bang
thanh dai » thanh hai, thanh tai, thanh dat
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang xa » lang xa, nang ma, mang xa
bat ky » ban ky, bac ky
tuc va » thuc va, truc va, tuc xa
loc va » hoc va, luc va
ve cau » ke cau, va cau, ve cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc bat ky ((nang xa) or (nang x)) hoi. hieu ve cau ((tuc va) or (loc va)) thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc bat ky ((nang xa) OR (nang x)) hoi. hieu ve cau ((tuc va) OR (loc va)) thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc bat ky ((nang xa) or (nang x)) hoi. hieu ve cau ((tuc va) or (loc va)) thanh dai cua tre*.