Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cam truc » cau truc, lam truoc, nam truoc
nam truc » nam truoc, nam trung, nam thuoc
nam thuc » nam thuoc, am thuc, nam thu
tinh vai » tinh va, tinh hai, tinh bai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
va tinh » may tinh
vai cua » dai cua, hai cua, lai cua
nang o » nang co, nang ho, nang ro
o lai » o lao

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 ky nang o lai. lieu va ((cam truc) or (((nam truc) OR (nam thuc)))) va tinh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang o lai. lieu va ((cam truc) OR (((nam truc) OR (nam thuc)))) va tinh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang o lai. lieu va ((cam truc) or (((nam truc) OR (nam thuc)))) va tinh vai cua triet*".