Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, danh va, doanh van
nang hoa » nang hoat, hang hoa, nang hoc
nam thuc » nam thuoc, am thuc, nam thu
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, tu cach
hoa hoi » khoa hoi, hoa hoc, hoa doi
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
hieu va » lieu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (te sach)) ty nang hoa hoi. ((hieu va) or (hieu qua)) nam thuc va danh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty nang hoa hoi. ((hieu va) OR (hieu qua)) nam thuc va danh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty nang hoa hoi. ((hieu va) or (hieu qua)) nam thuc va danh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty nang hoa hoi. ((hieu va) or (hieu qua)) nam thuc va danh vai cua triet*.