Perhaps you should try some spelling variations:
quan soc » quan so, quang hoc, quan quoc
quan doc » quan doi, quan dac, quan doan
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cuu tre » cau tren, cau treo
te ban » te bao
ban ky » van ky, dan 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 ban ky dang xa hoi. hieu va ((quan soc) OR (quan doc)) va hanh vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ban ky dang xa hoi. hieu va ((quan soc) OR (quan doc)) va hanh vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ban ky dang xa hoi. hieu va ((quan soc) OR (quan doc)) va hanh vi ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te ban ky dang xa hoi. hieu va ((quan soc) OR (quan doc)) va hanh vi ((cuu tre) or (cua tre))*.