Perhaps you should try some spelling variations:
cam truc » nam truc, lam truoc, nam truoc
su tien » su kien, su hien, tu tieng
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
tai su » tai so, tai tu, lai su
te sac » te sach, te cac, te san
va han » va phan, van han, va hang
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang xa hoi. hieu ve ((cam truc) OR (cau truc)) ((va han) or (va hanh)) tai su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. hieu ve ((cam truc) OR (cau truc)) ((va han) OR (va hanh)) tai su tien*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang xa hoi. hieu ve ((cam truc) OR (cau truc)) ((va han) or (va hanh)) tai su tien*".