Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach han » sach tham, sach danh, sach nang
han nang » phan nang, van nang, ban nang
cam thuc » nam thuc, cam thu, can thuc
vat hanh » vat thanh, van hanh, va hanh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
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 han nang xa hoi. hieu ve ((cam thuc) or (am thuc)) vat hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach han nang xa hoi. hieu ve ((cam thuc) OR (am thuc)) vat hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach han nang xa hoi. hieu ve ((cam thuc) or (am thuc)) vat hanh vi cua triet*.