Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
thuc van » thuc vat, thuc dan, thuc va
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
nang ho » nang hoc, nang co, tang ho
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
nang o » nang co, nang ro, nang x

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((nang o) or (nang ho)) hoi. hieu ve cam ((thuc van) or (duc van)) hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang o) OR (nang ho)) hoi. hieu ve cam ((thuc van) OR (duc van)) hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang o) or (nang ho)) hoi. hieu ve cam ((thuc van) or (duc van)) hanh lai cua tre*.