Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
danh vai » danh sai, danh va, doanh van
thuc day » thuc dan, thuc vat
thuc va » thuc vat, thuc dan
vai cua » dai cua, hai cua, lai cua
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
co loi » co hoi
va am » va lam, va cam

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang co loi. hieu va am ((thuc va) OR (thuc day)) danh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang co loi. hieu va am ((thuc va) or (thuc day)) danh vai cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang co loi. hieu va am ((thuc va) or (thuc day)) danh vai cua triet*.