Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve bac » ve ban, he bac, va bac
ve cac » va cac, vien cac
ve bao » te bao, va bao
bo van » vo van, so van, do van
vi va » vi van, vai va, vu va
thiet » thieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu ((((ve bac) OR (ve cac))) OR (ve bao)) bo van hanh vi va thiet~.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu ((((ve bac) or (ve cac))) or (ve bao)) bo van hanh vi va thiet*.