Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh vat » trinh van, trinh luat, sinh vat
hang nong » thang long, han tong
dung cong » dung trong
thanh cac » hanh cac, thanh bac, thanh ca
hien anh » hien hanh, thien anh, dien anh
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien anh - hanh trinh vat ((hang nong) or (dung cong)) dan ((thanh cac) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien anh - hanh trinh vat ((hang nong) OR (dung cong)) dan ((thanh cac) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien anh - hanh trinh vat ((hang nong) or (dung cong)) dan ((thanh cac) or (phan lap))*.