Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh van » thanh san, thanh toan, thanh nhan
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach hay
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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 ly) OR (sach ty)) nang xa hoi. hieu va cam xuc va ((thanh van) or (thanh phan)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ly) OR (sach ty)) nang xa hoi. hieu va cam xuc va ((thanh van) OR (thanh phan)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ly) OR (sach ty)) nang xa hoi. hieu va cam xuc va ((thanh van) or (thanh phan)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ly) OR (sach ty)) nang xa hoi. hieu va cam xuc va ((thanh van) or (thanh phan)) cua tre*.