Perhaps you should try some spelling variations:
kham duc » pham duc, kham cuoc, pham duy
hanh dau » hang dau, danh dau, han dau
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 vu » hieu ve, hieu su, dieu vu
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
dau cau » mau cau, dat cau, da cau

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