Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
thuc ban » thuoc ban, thuc dan, thu ban
cam thuc » am thuc, nam thuc, cam thu
hieu va » lieu va, hieu qua
su sach » so sach
nang xa » nang x, nang ma, mang xa
vu sach » vu bach, vu khach
lang xa » lang ha, dang xay, lang van
va cam » va cham, va cac, va cao
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)) ly ((nang xa) or (lang xa)) hoi. hieu va cam thuc ban thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly ((nang xa) OR (lang xa)) hoi. hieu va cam thuc ban thanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ly ((nang xa) or (lang xa)) hoi. hieu va cam thuc ban thanh vi cua triet*.