Perhaps you should try some spelling variations:
su triet » su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
han lai » han tai, han li, phan loai
su viet » so viet
te san » te ban, tu san, ta san
ke san » ke dan
va cau » van cau, va cac, va dau
va han » va phan, van han, va hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te san) or (ke san)) ky nang xa hoi. hieu va cau truc va han lai ((su triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te san) OR (ke san)) ky nang xa hoi. hieu va cau truc va han lai ((su triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: ((te san) or (ke san)) ky nang xa hoi. hieu va cau truc va han lai ((su triet) or (su viet))*.