Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
han tai » hang tai, nhan tai, van tai
cam tuc » cam tu, nam thuc, dam thuc
tai su » tai so, tai tu, lai su
va han » va phan, van han, va hanh
te sac » te cac, te san

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) or (te sach)) ky nang xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va han tai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky nang xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va han tai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te sach)) ky nang xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va han tai su triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te sach)) ky nang xa hoi. hieu ve ((cam tuc) OR (cam xuc)) va han tai su triet*.