Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thanh van » thanh san, thanh toan, thanh nhan
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cuu tre, cua triet
sach ly » sach y, sach lo, sach hay
hieu va » lieu va, hieu qua
vang xa » lang xa, mang xa, ang xa
sach ty » sach y, sach tu, sach thu
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao

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)) vang xa hoi. hieu va cam tuc 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)) vang xa hoi. hieu va cam tuc 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)) vang xa hoi. hieu va cam tuc va ((thanh van) or (thanh phan)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ly) OR (sach ty)) vang xa hoi. hieu va cam tuc va ((thanh van) or (thanh phan)) cua tre*.