Perhaps you should try some spelling variations:
ha triet » nha triet, va triet, hanh triet
dang nam » dong nam, dan nam, dung nam
danh nam » dan nam, dinh nam, hanh nam
nam thuc » nam thuoc, am thuc, nam thu
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
hanh xu » hanh tu, hanh sua, hanh cua
canh xa » canh va, canh tac, canh tay
ve nam » he nam, va nam, le nam

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 thieu ((canh xa) or (hanh xu)) hoi. hieu ve nam thuc va ((danh nam) OR (dang nam)) ha triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thieu ((canh xa) OR (hanh xu)) hoi. hieu ve nam thuc va ((danh nam) OR (dang nam)) ha triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thieu ((canh xa) or (hanh xu)) hoi. hieu ve nam thuc va ((danh nam) OR (dang nam)) ha triet".
• Adding a wildcard symbol may retrieve word variants: tu sach thieu ((canh xa) or (hanh xu)) hoi. hieu ve nam thuc va ((danh nam) OR (dang nam)) ha triet*.