Perhaps you should try some spelling variations:
thien van » thi van
nam thuoc » nam thu, nha thuoc, cay thuoc
cua triet » cua viet, su triet, va triet
nam thuc » am thuc, nam thu, nam tu
vanh dai » van dai, vanh tai, lanh dao
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va vanh » va van, va danh, va hanh

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 ky nang xa hoi. thien van ((nam thuc) OR (nam thuoc)) va vanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. thien van ((nam thuc) OR (nam thuoc)) va vanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. thien van ((nam thuc) OR (nam thuoc)) va vanh dai cua triet*.