Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh trung » thanh trung, hanh trang, manh trung
thanh phan » thanh pho, thanh san, thanh toan
cap nhung » cam nhung, vap nhung, canh nhung
dap nhung » vap nhung, va nhung, dap ung
cong dang » cong dong, cong dan, cong dung
thanh ban » thanh san, thanh van, thanh bac
doc hieu » toc thieu, hoc thieu, hoc hien

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 quang - hanh trung ((cap nhung) OR (dap nhung)) cong dang ((thanh ban) or (thanh phan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu quang - hanh trung ((cap nhung) OR (dap nhung)) cong dang ((thanh ban) OR (thanh phan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu quang - hanh trung ((cap nhung) OR (dap nhung)) cong dang ((thanh ban) or (thanh phan))".
• Adding a wildcard symbol may retrieve word variants: doc hieu quang - hanh trung ((cap nhung) OR (dap nhung)) cong dang ((thanh ban) or (thanh phan))*.