Perhaps you should try some spelling variations:
phat huu » pham huu, chat huu, phat huy
ban hanh » ban hang
su triet » su viet, su tien, ve triet
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va tinh » may tinh
vai su » va su, van su, lai su

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 ky nang ma hoa. hieu va phat huu ((va tinh) or (ban hanh)) vai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky nang ma hoa. hieu va phat huu ((va tinh) OR (ban hanh)) vai su triet.
• Adding a wildcard symbol may retrieve word variants: so sanh ky nang ma hoa. hieu va phat huu ((va tinh) or (ban hanh)) vai su triet*.