Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
cua triet » cua viet, su triet, va triet
nang hoa » nang hoat, hang hoa, nang hoc
nam thuc » am thuc, nam thu, nam tu
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc 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 he » hieu ve, hiem he, hieu le
va hanh » van hanh, va thanh, va danh
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: te sach ty nang hoa hoi. hieu he ((nam thuc) or (nam thuoc)) va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang hoa hoi. hieu he ((nam thuc) OR (nam thuoc)) va hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang hoa hoi. hieu he ((nam thuc) or (nam thuoc)) va hanh vai cua triet*.