Perhaps you should try some spelling variations:
thien van » thi van
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, lieu va, hieu ve
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, cam nang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cam luc » cam xuc, cau luc
va cau » van cau, va cac, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. ((hieu van) OR (thien van)) cam luc ((va hang) or (va nang)) va cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. ((hieu van) OR (thien van)) cam luc ((va hang) OR (va nang)) va cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. ((hieu van) OR (thien van)) cam luc ((va hang) or (va nang)) va cau treo*".