Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
danh va » doanh va, hanh va, anh va
su viet » so viet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
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 nang xa hoi. ((hieu ve) or (hieu va)) cam tu va danh va ((su viet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. ((hieu ve) OR (hieu va)) cam tu va danh va ((su viet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu ve) or (hieu va)) cam tu va danh va ((su viet) or (ve triet))*.