Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach cap » sach dao, sach bai, sach xa
cap nang » cam nang, cao nang, ca nang
cam thuc » am thuc, cam thu, can thuc
nam thuc » nam thuoc, am thuc, nam thu
su sach » so sach, vu sach
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua

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 cap nang cao hoi. hieu va ((cam thuc) or (nam thuc)) va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach cap nang cao hoi. hieu va ((cam thuc) OR (nam thuc)) va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach cap nang cao hoi. hieu va ((cam thuc) or (nam thuc)) va hanh vi cua triet*.