Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hieu va » lieu va, hieu qua
va thac » van thac, va thuc, va tac
sach ky » sac ky, sach y, sach ty
danh vi » hanh vi, dinh vi, danh di
te sach » toc sach
toc va » hoc va, toc ta, loc va
tuc va » thuc va, truc va, tuc xa
vi cau » va cau, ve cau, di cau
x hoi » o hoi, x ho, 5 hoi

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 ky nang ((x hoi) OR (xa hoi)). hieu va thac ((toc va) or (tuc va)) danh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((x hoi) OR (xa hoi)). hieu va thac ((toc va) OR (tuc va)) danh vi cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((x hoi) OR (xa hoi)). hieu va thac ((toc va) or (tuc va)) danh vi cau treo".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((x hoi) OR (xa hoi)). hieu va thac ((toc va) or (tuc va)) danh vi cau treo*.