Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cam truc » cau truc, nam truc, lam truoc
va hang » van hang, va nang, va lang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va phan » van phan, va phat, va phap
tai su » tai so, tai tu, lai su
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
va han » van han, va hanh, va chan

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 ve cam truc ((((va han) OR (va hang))) OR (va phan)) tai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang xa hoi. hieu ve cam truc ((((va han) OR (va hang))) or (va phan)) tai su triet~".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. hieu ve cam truc ((((va han) OR (va hang))) or (va phan)) tai su triet*.