Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
truoc va » thuoc va, truong va, truoc bua
su triet » su tien, ve triet
su viet » so viet
han tai » hang tai, nhan tai, van tai
van lam » van nam
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
ve van » le van

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