Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doc thuc » hoc thuc, do thuc, hoc thuoc
trinh ve » trinh he, trinh va, trinh viet
trinh vi » trinh va, trinh viet, trinh van
trong xa » trong xay, trong ca, trong xu
thuc va » thuc vat, thuc dan, thuc day
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ve doc » ve duoc, va doc, me doc

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((tang ma) or (trong xa)) hoi. hieu ve doc thuc va ((trinh vi) or (trinh ve)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((tang ma) OR (trong xa)) hoi. hieu ve doc thuc va ((trinh vi) OR (trinh ve)) cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((tang ma) or (trong xa)) hoi. hieu ve doc thuc va ((trinh vi) or (trinh ve)) cua triet*.