Perhaps you should try some spelling variations:
chinh luan » chinh ngan, trinh luan, binh luan
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
chinh ca » chinh ta, chinh va, chinh tai
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 ((((chinh cho) or (chinh ca))) or (chinh luan)) trong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh ((((chinh cho) OR (chinh ca))) OR (chinh luan)) trong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((((chinh cho) or (chinh ca))) or (chinh luan)) trong cong dan toan cao*.