Perhaps you should try some spelling variations:
van phong » van dong, hai phong
hanh cam » hanh cham, hanh lam, hanh nam
van phan » van thanh, luan phan, van ban
hanh dao » lanh dao, thanh dat, thanh dam
so hanh » so sanh, so danh, co hanh
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
dao cua » dai cua, day cua, dan cua
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so hanh cam nang x hoi. hieu ((van phan) OR (van phong)) thuc va hanh dao cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so hanh cam nang x hoi. hieu ((van phan) OR (van phong)) thuc va hanh dao cua tre".
• Adding a wildcard symbol may retrieve word variants: so hanh cam nang x hoi. hieu ((van phan) OR (van phong)) thuc va hanh dao cua tre*.