Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
luong quang » luong quan, dung quang
tao khoang » tao zhang
cong luong » cong thuong, nang luong, cong dong
hieu xanh » chieu xanh, hieu manh, hieu nganh
dao khang » dao khong, tao khang, dao thanh
quang cao » nang cao, quang nam
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 xanh - hanh truong ((dao khang) or (tao khoang)) cong luong quang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh truong ((dao khang) OR (tao khoang)) cong luong quang cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh truong ((dao khang) or (tao khoang)) cong luong quang cao*.