Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang may » mang may, nang ma, nang cao
van hanh » van thanh, ban hanh, van anh
bang may » mang may, ban may, bang tay
cam tuc » cam tu, nam thuc, dam thuc
hieu ve » hieu va, hieu van
sai ky » sac ky
su sai » su tai, su hai, su dai
vi ve » va ve, gi ve, ve ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky ((nang may) OR (bang may)) hoi. hieu ve ((cam tuc) or (cam xuc)) van hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((nang may) OR (bang may)) hoi. hieu ve ((cam tuc) OR (cam xuc)) van hanh vi ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky ((nang may) OR (bang may)) hoi. hieu ve ((cam tuc) or (cam xuc)) van hanh vi ve triet".
• Adding a wildcard symbol may retrieve word variants: su sai ky ((nang may) OR (bang may)) hoi. hieu ve ((cam tuc) or (cam xuc)) van hanh vi ve triet*.