Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
qua pham » quan pham, quy pham, qua cham
van hanh » van thanh, ban hanh, van ban
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
sanh ty » sach ty, canh tay
van anh » van thanh, tuan anh, van minh
so sanh » do sanh
ma hoi » mai hoi, xa hoi, ma hoa
dai va » mai va
doi va » hoi va, noi va

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 ty nang ma hoi. hieu qua pham thuc ((van hanh) OR (van anh)) ((dai va) or (doi va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ty nang ma hoi. hieu qua pham thuc ((van hanh) OR (van anh)) ((dai va) OR (doi va)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ty nang ma hoi. hieu qua pham thuc ((van hanh) OR (van anh)) ((dai va) or (doi va)) triet*".