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
nhan tuc » nhan thuc, nhan luc, nhanh thuc
tang mai » tang ma, tang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
ve nhan » ve nha, de nhan, va nhan
te sach » toc sach
sach 7 » sach y, sach 2
tuc va » thuc va, truc va, tuc xa
7 tang » 6 tang

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 mai hoi. hieu ve nhan tuc va ((danh dau) or (hang dau)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach 7 tang mai hoi. hieu ve nhan tuc va ((danh dau) OR (hang dau)) cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach 7 tang mai hoi. hieu ve nhan tuc va ((danh dau) or (hang dau)) cua triet*.