Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
te sach » toc sach
doi cua » dai cua, hoi cua
cac xuc » cam xuc, chat xuc, cac cuoc
vu dang » su dang, vu quang, cua dang
vu nang » vuc nang, va nang, v nang
cua tre » cua te, cuu tre, cua triet

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 ((vu nang) OR (vu dang)) xa hoi. hieu qua ((cac xuc) or (cac nuoc)) gia thanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((vu nang) OR (vu dang)) xa hoi. hieu qua ((cac xuc) OR (cac nuoc)) gia thanh doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((vu nang) OR (vu dang)) xa hoi. hieu qua ((cac xuc) or (cac nuoc)) gia thanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((vu nang) OR (vu dang)) xa hoi. hieu qua ((cac xuc) or (cac nuoc)) gia thanh doi cua tre*.