Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
va hanh » va thanh, va danh, ban hanh
cau xuc » cam xuc, cau luc, cau truc
te sach » toc sach
hieu va » hieu qua
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
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 xa hoi. ((hieu va) OR (lieu va)) cau xuc ((va hanh) or (van hanh)) ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty lang xa hoi. ((hieu va) OR (lieu va)) cau xuc ((va hanh) OR (van hanh)) ki su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty lang xa hoi. ((hieu va) OR (lieu va)) cau xuc ((va hanh) or (van hanh)) ki su triet".
• Adding a wildcard symbol may retrieve word variants: te sach ty lang xa hoi. ((hieu va) OR (lieu va)) cau xuc ((va hanh) or (van hanh)) ki su triet*.