Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
van chat » cao chat
van cau » van dau, van hau, toan cau
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
va hanh » va thanh, va danh, ban hanh
ty lang » tay lang, ty xang, ty hang
te sach » toc sach
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 ((van cau) OR (van chat)) 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 ((van cau) OR (van chat)) 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 ((van cau) OR (van chat)) xuc ((va hanh) or (van hanh)) ki su triet".
• Adding a wildcard symbol may retrieve word variants: te sach ty lang xa hoi. hieu ((van cau) OR (van chat)) xuc ((va hanh) or (van hanh)) ki su triet*.