Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van ban
van anh » van thanh, tuan anh, van minh
cau xuc » cam xuc, cau luc, cau truc
te sach » toc sach
hieu va » lieu va, hieu qua
ty hang » ly hang, ty xang, thi hang
ty lang » tay lang, ty xang, tu lang
va cau » van cau, va cac, va dau
ki su » ky su

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 ((ty lang) or (ty hang)) xa hoi. hieu va cau xuc ((van hanh) or (van anh)) ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (ty hang)) xa hoi. hieu va cau xuc ((van hanh) OR (van anh)) ki su triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (ty hang)) xa hoi. hieu va cau xuc ((van hanh) or (van anh)) ki su triet*.