Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
lang van » dang van, tang van, hoang van
hanh di » hanh vi, hanh de, hang di
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
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: thu sach ty ((nang xa) or (lang van)) hoi. hieu ve cac ((tuc va) or (duc va)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (lang van)) hoi. hieu ve cac ((tuc va) OR (duc va)) hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (lang van)) hoi. hieu ve cac ((tuc va) or (duc va)) hanh di cua tre*.