Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham cuu » cap cuu, chat cua
trinh vi » trinh va, trinh ve, trinh viet
tinh vi » tinh voi, tinh va, dinh vi
cuu ban » cuu van, cua ban, cuu san
tu sach » thu sach, su sach, tu cach
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
ve cham » va cham, ve chat, vu cham

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) or (te sach)) ky tang xa hoi. hieu ve cham cuu ban ((tinh vi) or (trinh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky tang xa hoi. hieu ve cham cuu ban ((tinh vi) OR (trinh vi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky tang xa hoi. hieu ve cham cuu ban ((tinh vi) or (trinh vi)) cua triet*.