Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
nang xa » nang x, lang xa, nang ma
hieu ca » hieu cac, hieu cua, hieu va
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
de cua » le cua, te cua, dieu cua
cua te » cua tu

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: te sac ky nang xa hoi. hieu ca ((nhan luc) OR (nang luc)) ((van hanh) OR (ban hanh)) de cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang xa hoi. hieu ca ((nhan luc) OR (nang luc)) ((van hanh) or (ban hanh)) de cua te~".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. hieu ca ((nhan luc) OR (nang luc)) ((van hanh) or (ban hanh)) de cua te*.