Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cam truc » cau truc, nam truc, lam truoc
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
truc va » thuc va, thuc vat, trung va
han lai » han tai, phan loai, nhan loai
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) OR (le van)) ky nang xa hoi. hieu van cam truc va ((han lai) or (han li)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ve van) OR (le van)) ky nang xa hoi. hieu van cam truc va ((han lai) OR (han li)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ve van) OR (le van)) ky nang xa hoi. hieu van cam truc va ((han lai) or (han li)) su triet".
• Adding a wildcard symbol may retrieve word variants: ((ve van) OR (le van)) ky nang xa hoi. hieu van cam truc va ((han lai) or (han li)) su triet*.