Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh van » thanh san, thanh toan, thanh phan
cam truc » cau truc, lam truoc, nam truoc
nam truc » nam truoc, nam thuc, nam trung
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cua » vang cua, ban cua, dan cua
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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 hai. lieu va ((cam truc) or (nam truc)) va thanh van cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang o hai. lieu va ((cam truc) OR (nam truc)) va thanh van cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang o hai. lieu va ((cam truc) or (nam truc)) va thanh van cua triet*.