Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
cua triet » cua viet, su triet, va triet
vat hanh » vat thanh, van hanh, va hanh
su sach » so sach
vu sach » vu bach, vu khach
ha nang » kha nang, hoa nang, da nang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
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) or (vu sach)) ha nang xa hoi. hieu ve cham thuc vat hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ha nang xa hoi. hieu ve cham thuc vat hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ha nang xa hoi. hieu ve cham thuc vat hanh vi cua triet*.