Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
su sach » so sach
vu sach » vu bach, vu khach
hieu ve » hieu van
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v 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: ((su sach) OR (vu sach)) y nang x ho. ((hieu ve) or (hieu va)) am thuc day hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang x ho. ((hieu ve) OR (hieu va)) am thuc day hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang x ho. ((hieu ve) or (hieu va)) am thuc day hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) y nang x ho. ((hieu ve) or (hieu va)) am thuc day hanh di cua triet*.