Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
hanh vai » hanh vi, hanh va, hanh tai
thu tai » tu tai, tru tai, thu hai
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
cua tuc » cua duc, cua thuoc, luat tuc
tai ky » thai ky, trai ky, sai ky
cua tu » cua su, cua cu, cua vu

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

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