Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
hanh hai » thanh hai, hang hai, hanh tai
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren
so sach » so sanh, bo sach, co sach
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: so sach ky nang xa hoi. hieu van cac xuc va ((hanh hai) or (nhanh hai)) ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu van cac xuc va ((hanh hai) OR (nhanh hai)) ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. hieu van cac xuc va ((hanh hai) or (nhanh hai)) ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu van cac xuc va ((hanh hai) or (nhanh hai)) ((cuu tre) OR (cau treo))*.