Perhaps you should try some spelling variations:
doanh chung » doanh nhung, doanh thuong, doanh chuoi
hieu quang » thieu quang, hieu quan, hieu qua
hanh trung » thanh trung, hanh trang, manh trung
hieu lang » chieu sang, nhieu tang, hieu van
doan hung » doan phuong, doanh nhung, doan quang
cong tinh » cong trinh, cong vinh, long tinh
toan cau » 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: ho ((hieu lang) or (hieu quang)) - hanh trung ((doanh chung) or (doan hung)) cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - hanh trung ((doanh chung) OR (doan hung)) cong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu quang)) - hanh trung ((doanh chung) or (doan hung)) cong tinh toan cau*.