Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
hieu tinh » chieu tinh, lieu tinh, kieu tinh
bang cong » dang cong, bang song, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua bang » chua bang, cua ban, cua dang
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
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 tinh - ((hanh trinh) or (canh tranh)) cua bang cong dan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - ((hanh trinh) OR (canh tranh)) cua bang cong dan ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu tinh - ((hanh trinh) or (canh tranh)) cua bang cong dan ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - ((hanh trinh) or (canh tranh)) cua bang cong dan ((toan cau) OR (toan cao))*.