Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van nang » van quang, van ban, van dong
cam thuc » am thuc, nam thuc, cam thu
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
va cam » va cham, va cac, va cao

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)) van nang xa hoi. hieu va cam thuc van hanh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) van nang xa hoi. hieu va cam thuc van hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) van nang xa hoi. hieu va cam thuc van hanh vai cua triet*.