Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cau theo » cau thi, cau tao
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
te sach » toc sach
xa hanh » xa thanh, xa khanh, da hanh
cao tuc » dao tuc, cao duc, cao suc
hieu va » lieu va, hieu qua
va cao » va cac, va co, va dao
x hoi » xa hoi, o hoi, x ho

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. hieu va cao tuc ((xa hanh) or (va hanh)) ve ((cau theo) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu va cao tuc ((xa hanh) OR (va hanh)) ve ((cau theo) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu va cao tuc ((xa hanh) or (va hanh)) ve ((cau theo) or (cau tren))*.