Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
lang van » dang van, tang van, hoang van
hanh tai » thanh tai, hang tai, han tai
nang xa » nang x, lang xa, nang ma
cuc tre » duc tre, cua tre, cuu tre
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((nang xa) or (lang van)) hoi. lieu va cam ((xuc va) or (tuc va)) hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (lang van)) hoi. lieu va cam ((xuc va) OR (tuc va)) hanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang xa) or (lang van)) hoi. lieu va cam ((xuc va) or (tuc va)) hanh tai cuc tre*.