Perhaps you should try some spelling variations:
dua tren » dung tren
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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) or (su sach)) ky nang x hoi. hieu va cao xuc va thanh vi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (su sach)) ky nang x hoi. hieu va cao xuc va thanh vi ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (su sach)) ky nang x hoi. hieu va cao xuc va thanh vi ((dua tren) or (cuu tre))*.