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
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac xuc » cam xuc, chat xuc, cac cuoc
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren

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