Perhaps you should try some spelling variations:
su triet » su viet, ve triet
su tien » su kien, su hien, tu tieng
cam thu » nam thu, cac thu, ca thu
nang xa » lang xa, nang ma, mang xa
danh va » doanh va, hanh va, anh va
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
tu sac » tu sach, tu cac, tu san
thu va » thuc va, thue va, tu va
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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

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