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

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 ty nang hoa hoi. hieu va ((nam thuc) OR (am thuc)) day danh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang hoa hoi. hieu va ((nam thuc) OR (am thuc)) day danh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang hoa hoi. hieu va ((nam thuc) OR (am thuc)) day danh vai cua triet*.