Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
vat hanh » vat thanh, van hanh, va hanh
cua viet » ca viet, hoa viet, cua vat
so sanh » do sanh
hieu va » lieu va, hieu qua
va phap » va phat, ban phap
y nang » ly nang, v nang, may nang
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: ((so sanh) or (cho sinh)) ((y nang) OR (ky nang)) xa hoi. hieu va phap thuc vat hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (cho sinh)) ((y nang) OR (ky nang)) xa hoi. hieu va phap thuc vat hanh vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) or (cho sinh)) ((y nang) OR (ky nang)) xa hoi. hieu va phap thuc vat hanh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (cho sinh)) ((y nang) OR (ky nang)) xa hoi. hieu va phap thuc vat hanh vi cua viet*.