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
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
dai hoi » dai hai, dai moi
hieu vi » hieu voi, hieu va, hieu ve
vi cua » vai cua, di 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 ky nang ((dai hoi) or (dai hoc)). hieu vi pham thuc day hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((dai hoi) OR (dai hoc)). hieu vi pham thuc day hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((dai hoi) or (dai hoc)). hieu vi pham thuc day hanh vi cua triet*.