Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
te sach » toc sach
sach ly » sach y, sach lo, sach ty
lang xa » lang ha, dang xay, lang van
hieu tu » chieu tu, hieu tuc, hien tu
tu chat » tu phat, tu cham, du chat
lua van » luu van, qua van, cua van
vi su » va su, ve su, ki su
luan » quan, lan

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 ly ((lang xa) or (nang x)) hoi. hieu tu chat ((lua van) OR (luan van)) hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly ((lang xa) OR (nang x)) hoi. hieu tu chat ((lua van) OR (luan van)) hanh vi su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly ((lang xa) or (nang x)) hoi. hieu tu chat ((lua van) OR (luan van)) hanh vi su triet*".