Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
van thanh » van tuan
su triet » su viet, su tien, ve triet
hat luu » chat huu, chat lua, phap luu
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
hieu tu » chieu tu, hieu tuc, hien tu
lang xa » lang ha, dang xay, lang van
tu hat » tu phat, tuc hat, tu bat
vi su » va su, ve su, ki su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ly ((lang xa) or (nang x)) hoi. hieu tu hat luu ((van thanh) OR (ban thanh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly ((lang xa) OR (nang x)) hoi. hieu tu hat luu ((van thanh) OR (ban thanh)) vi su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly ((lang xa) or (nang x)) hoi. hieu tu hat luu ((van thanh) OR (ban thanh)) vi su triet*".