Perhaps you should try some spelling variations:
nang van » dang van, tang van, lang van
sach ky » sac ky, sach ty, sach kem
hanh di » hanh vi, hanh de, hang di
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua

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 ky) or (sach y)) nang van hoa. hieu ve cam ((luc va) or (thuc va)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach y)) nang van hoa. hieu ve cam ((luc va) OR (thuc va)) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) or (sach y)) nang van hoa. hieu ve cam ((luc va) or (thuc va)) hanh di cua tre*.