Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
pham thuc » phap thuc, pham chuc, nham thuc
thuc day » thuc dan, thuc vat
day hanh » day nhanh, day thanh, dao hanh
te sach » toc sach
ty dong » tay dong, tu dong, ly dong
hieu vu » hieu va, hieu ve, hieu su
vu pham » su pham, vi pham, vu kham
hanh va » hang va, hanh vi
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty dong) or (ty xang)) xa hoi. hieu vu pham thuc day hanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty dong) OR (ty xang)) xa hoi. hieu vu pham thuc day hanh va cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty dong) or (ty xang)) xa hoi. hieu vu pham thuc day hanh va cua triet*.