Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuat san » thuat toan, thuat song, thuat lanh
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
cau duc » cao duc, cau luc, chu duc
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat

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

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