Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
te bai » te bao, te tai, te ban
de cua » le cua, te cua, dieu cua
bai ky » ban ky, sai ky, bac ky
cua te » cua tu
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 bai ky nang x hoi. ((hieu ve) or (hieu va)) cam luc ((van hanh) or (ban hanh)) de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ky nang x hoi. ((hieu ve) OR (hieu va)) cam luc ((van hanh) OR (ban hanh)) de cua te.
• Adding a wildcard symbol may retrieve word variants: te bai ky nang x hoi. ((hieu ve) or (hieu va)) cam luc ((van hanh) or (ban hanh)) de cua te*.