Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
luc va » tuc va, loc va

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 xa hoi. hieu ve cam ((duc va) or (luc va)) hanh vi ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ve cam ((duc va) OR (luc va)) hanh vi ((cua tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ve cam ((duc va) or (luc va)) hanh vi ((cua tre) or (cau treo))*.