Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lam truc » lam truoc, nam truc, lam thuoc
su triet » su viet, su tien
ve triet » va trien
nang xa » nang x, lang xa, nang ma
van lam » van nam
truc va » thuc va, thuc vat, trung va
han tai » hang tai, nhan tai, van tai
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
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 ky nang xa hoi. hieu van lam truc va han tai ((su triet) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky nang xa hoi. hieu van lam truc va han tai ((su triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: te san ky nang xa hoi. hieu van lam truc va han tai ((su triet) OR (ve triet))*.