Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » thong cong, hang cong, nhung don
hien sach » dien sach, kien sach, thien hach
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
ban phan » ban phap, van phan, ban than
phan tap » phan lap, han tap, pha tap

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 sach - hanh trinh vat ((nhung cong) or (dung cong)) ban phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - hanh trinh vat ((nhung cong) OR (dung cong)) ban phan tap.
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh trinh vat ((nhung cong) or (dung cong)) ban phan tap*.