Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam truc » nam truoc, nam thuc, nam trung
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
han lai » han tai, phan loai, nhan loai
ve van » le van
han li » shan li, ban li, dan li

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

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