Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, thanh san
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc gia » quoc gia
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, me hoi

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 v nang ((ma hoi) OR (ma hoa)). hieu ve pham duc gia ((thanh tai) or (doanh tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang ((ma hoi) OR (ma hoa)). hieu ve pham duc gia ((thanh tai) OR (doanh tai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang ((ma hoi) OR (ma hoa)). hieu ve pham duc gia ((thanh tai) or (doanh tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang ((ma hoi) OR (ma hoa)). hieu ve pham duc gia ((thanh tai) or (doanh tai)) cua triet*.