Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » thong cong, hang cong, nhung don
hieu xanh » chieu xanh, hieu manh, hieu nganh
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
quan cua » quan luan, ban cua, gian cua
tuan thu » toan thuc, van thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh trinh quan ((nhung cong) or (dung cong)) van ((quan cua) or (tuan thu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh trinh quan ((nhung cong) OR (dung cong)) van ((quan cua) OR (tuan thu)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh quan ((nhung cong) or (dung cong)) van ((quan cua) or (tuan thu))*.