Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
so sanh » do sanh
va hanh » van hanh, va thanh, va danh
mai hoi » mai khoi, lai hoi, mai hoa
thuc va » thuc vat, thuc dan, thuc day
mai doi » moi doi, mai khoi, mai duoc
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
vi hoa » voi hoa, vi hoc, va hoa
sanh v » sanh va, canh v, sanh _
v nang » va nang, vu nang, van nang

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 v nang ((((mai hoi) or (mai doi))) or (dai hoi)). hieu ve pham thuc va hanh vi hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh v nang ((((mai hoi) OR (mai doi))) OR (dai hoi)). hieu ve pham thuc va hanh vi hoa viet.
• Adding a wildcard symbol may retrieve word variants: so sanh v nang ((((mai hoi) or (mai doi))) or (dai hoi)). hieu ve pham thuc va hanh vi hoa viet*.