Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
dan cat » dan dat, dan cac, dan vat
dan lat » dan luat, dan dat, dan lap
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang x hoi. hieu va cac tuc va ((((dan cat) OR (dan lat))) or (dan ca)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu va cac tuc va ((((dan cat) OR (dan lat))) OR (dan ca)) su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu va cac tuc va ((((dan cat) OR (dan lat))) or (dan ca)) su triet*".