Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
cua triet » cua viet, su triet, va triet
trang xa » trang va, trang ha, trong xa
nam thuc » am thuc, nam thu, nam tu
van hang » van khang, van hoang, van thang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
tang xa » tang ma, lang xa, tang ha
va cua » va chua, via cua, ca 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 ky ((tang xa) OR (trang xa)) hoi. lieu va ((nam thuc) or (nam thuoc)) van hang va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((tang xa) OR (trang xa)) hoi. lieu va ((nam thuc) OR (nam thuoc)) van hang va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((tang xa) OR (trang xa)) hoi. lieu va ((nam thuc) or (nam thuoc)) van hang va cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((tang xa) OR (trang xa)) hoi. lieu va ((nam thuc) or (nam thuoc)) van hang va cua triet*.