Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
so sanh » do sanh
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
sanh y » sinh y, anh y, hanh y
y nang » ky nang, ly nang, v nang
vi hoa » voi hoa, vi hoc, va hoa

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 y nang cao hoi. hieu ve cham thuc ((va hanh) OR (va danh)) vi hoa viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y nang cao hoi. hieu ve cham thuc ((va hanh) OR (va danh)) vi hoa viet".
• Adding a wildcard symbol may retrieve word variants: so sanh y nang cao hoi. hieu ve cham thuc ((va hanh) OR (va danh)) vi hoa viet*.