Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
lam thuc » lam thuoc, am thuc, nam thuc
thuc day » thuc dan, thuc vat
day hanh » day nhanh, day thanh, dao hanh
vu sach » vu bach, su sach, vu khach
so sach » so sanh, bo sach, co sach
cao hoc » co hoc, cho hoc, chat hoc
van lam » van nam
hanh di » hanh vi, hanh de, hang di
v nang » va nang, vu nang, van nang
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (so sach)) v nang cao hoc. hieu van lam thuc day hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) v nang cao hoc. hieu van lam thuc day hanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) v nang cao hoc. hieu van lam thuc day hanh di cua triet*.