Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
cham cuu » cap cuu, chat cua
cham luu » chat lua, phap luu, cham lai
sach ly » sach y, sach lo, sach ty
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu tu » chieu tu, hieu tuc, hien tu
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 ((cham luu) OR (cham cuu)) van hanh 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 ((cham luu) OR (cham cuu)) van hanh 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 ((cham luu) OR (cham cuu)) van hanh vi su triet*".