Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
nam duc » nam duoc, pham duc, nam thuc
duc qua » duc quan, duc quy, luc quan
kinh ve » kinh te, minh ve, kinh viet
dinh ve » dinh ket, dinh van
cua tre » cua te, cuu tre, cua triet
te sai » te tai, te bai, te lai

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) or (te bao)) ky nang xa hoi. hieu van nam duc qua ((kinh ve) or (dinh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te bao)) ky nang xa hoi. hieu van nam duc qua ((kinh ve) OR (dinh ve)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sai) or (te bao)) ky nang xa hoi. hieu van nam duc qua ((kinh ve) or (dinh ve)) cua tre*.