Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
thanh ve » hanh ve, thanh va, thanh vien
thuc ban » thuoc ban, thuc dan, thu ban
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
su sach » so sach
dong ha » dong hoa, dong va, dong hoc
vu sach » vu bach, vu khach
tang ma » mang may, tang van
ve cua » le cua, de cua, te cua

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) or (vu sach)) ky ((dong ha) or (tang ma)) hoi. hieu van nam thuc ban thanh ve cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky ((dong ha) OR (tang ma)) hoi. hieu van nam thuc ban thanh ve cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky ((dong ha) or (tang ma)) hoi. hieu van nam thuc ban thanh ve cua triet*.