Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham tuc » nham thuc, pham thuc, tham thuc
vai cua » dai cua, hai cua, lai cua
ve cham » va cham, ve chat, vu cham
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
te sach » toc sach
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, ma hoa

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