Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh vai » tinh hai, tinh bai, tinh lai
cham tuc » nham thuc, pham thuc, tham thuc
tinh va » tich va, trinh van, trinh vat
hieu ve » hieu va, hieu van
tu sach » thu sach, su sach, tu cach
nang ma » tang ma, sang ma, nang cao
te sach » toc sach
ve cham » va cham, ve chat, vu cham
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: ((tu sach) or (te sach)) ky nang ma hoi. hieu ve cham tuc xa ((tinh vai) OR (tinh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang ma hoi. hieu ve cham tuc xa ((tinh vai) OR (tinh va)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang ma hoi. hieu ve cham tuc xa ((tinh vai) OR (tinh va)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang ma hoi. hieu ve cham tuc xa ((tinh vai) OR (tinh va)) cua triet*.