Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang dau » hang va, hang tai
danh dau » lanh dao, danh tu, xang dau
te sach » toc sach
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
sach 7 » sach y, sach 2
ma hoi » mai hoi, xa hoi, ma hoa
7 tang » 6 tang
tuc va » thuc va, truc va, duc va

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 7 tang ma hoi. hieu ve nhan ((tuc va) OR (tuc xa)) ((danh dau) or (hang dau)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach 7 tang ma hoi. hieu ve nhan ((tuc va) OR (tuc xa)) ((danh dau) OR (hang dau)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach 7 tang ma hoi. hieu ve nhan ((tuc va) OR (tuc xa)) ((danh dau) or (hang dau)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach 7 tang ma hoi. hieu ve nhan ((tuc va) OR (tuc xa)) ((danh dau) or (hang dau)) cua triet*.