Perhaps you should try some spelling variations:
dang xay » dang van, van xay
su triet » su viet, ve triet
su tien » su kien, su hien, tu tieng
ve cham » va cham, ve chat, vu cham
danh va » doanh va, hanh va, anh va
va danh » va dinh, va dan, va hanh
cham tu » pham tu, cam tu, chai tu
hieu ve » hieu va, hieu van
lang xa » lang ha, lang van
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((lang xa) OR (dang xay)) hoi. hieu ve cham tu va danh va ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((lang xa) OR (dang xay)) hoi. hieu ve cham tu va danh va ((su triet) OR (su tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((lang xa) OR (dang xay)) hoi. hieu ve cham tu va danh va ((su triet) or (su tien))".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((lang xa) OR (dang xay)) hoi. hieu ve cham tu va danh va ((su triet) or (su tien))*.