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

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