Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
nam thuc » nam thuoc, am thuc, nam thu
sach thu » sach thue, sach thieu, sach tham
xay hoi » xa hoi, tay hoi, cay phoi
sach ty » sach y, sach tu, xach tay
thuc va » thuc vat, thuc dan, thuc day
hanh va » hang va
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach ty) or (sach thu)) dang xay hoi. hieu va nam thuc va ((hanh va) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach ty) OR (sach thu)) dang xay hoi. hieu va nam thuc va ((hanh va) OR (hanh vi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: toc ((sach ty) or (sach thu)) dang xay hoi. hieu va nam thuc va ((hanh va) or (hanh vi)) cua triet*.