Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh va » doan va, doanh tai, doanh cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
danh va » hanh va, anh va, dan va
x hoi » o hoi, x ho, 5 hoi
ve am » va am

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 ky nang ((x hoi) or (xa hoi)). hieu ve am thuc va ((danh va) OR (doanh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((x hoi) OR (xa hoi)). hieu ve am thuc va ((danh va) OR (doanh va)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((x hoi) or (xa hoi)). hieu ve am thuc va ((danh va) OR (doanh va)) cua triet*".