Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham truc » cau truc, nham thuc, pham thuc
van hang » van khang, van hoang, van thang
truc van » truc va, thuc van, truc ban
qua cham » qua hai, qua cac, va cham
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
so sach » so sanh, bo sach, co sach
hang di » hang doi, hang vi, hang dien
su sach » vu sach
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ky tang xa hoi. hieu qua cham truc van hang di ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky tang xa hoi. hieu qua cham truc van hang di ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky tang xa hoi. hieu qua cham truc van hang di ((cua te) or (cua triet))*.