Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tham soc » cham soc, tham nuoc, thai son
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
hoa hoi » khoa hoi, hoa hoc, hoa doi
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, dua tren
ky lang » ky nang, ky dang, ky tang
ha hoi » ha noi, xa hoi, va hoi
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky lang ((ha hoi) OR (hoa hoi)). hieu van tham soc va hanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky lang ((ha hoi) OR (hoa hoi)). hieu van tham soc va hanh va ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky lang ((ha hoi) OR (hoa hoi)). hieu van tham soc va hanh va ((cua tre) or (cua triet))*".