Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cam truc » cau truc, nam truc, lam truoc
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
truc va » thuc va, thuc vat, trung va
hanh ve » hanh va, hanh kem
te sai » te tai, te bai, te lai
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang xa hoi. ((hieu ve) OR (hieu van)) cam truc va ((hanh ve) or (hanh vi)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang xa hoi. ((hieu ve) OR (hieu van)) cam truc va ((hanh ve) OR (hanh vi)) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang xa hoi. ((hieu ve) OR (hieu van)) cam truc va ((hanh ve) or (hanh vi)) ve triet".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang xa hoi. ((hieu ve) OR (hieu van)) cam truc va ((hanh ve) or (hanh vi)) ve triet*.