Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham cuu » cap cuu, chat cua
danh dau » lanh dao, hang dau, xang dau
te sach » toc sach
tang ma » mang may, tang van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
danh tu » anh tu, doanh thu
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, xa hoi, ma hoa
cuu va » cuu van, cuu ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y tang ma hoi. hieu ve cham cuu va ((danh dau) or (danh tu)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang ma hoi. hieu ve cham cuu va ((danh dau) OR (danh tu)) cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach y tang ma hoi. hieu ve cham cuu va ((danh dau) or (danh tu)) cua triet*.