Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
lang ha » long ha
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va

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

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