Perhaps you should try some spelling variations:
su triet » su tien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van tai » von tai, van tuan
han tai » hang tai, nhan tai, toan tai
su viet » so viet
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao

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