Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
trung doan » trong doanh, truong toan, trung hoa
trang doan » tran doan, trong doanh, trang tuan
phung cong » nhung cong, phong cong, nhung chong
hieu lang » chieu sang, nhieu tang, hieu van
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
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 doan) OR (trang doan)) phung cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu quang)) - hanh ((trung doan) OR (trang doan)) phung cong manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (hieu quang)) - hanh ((trung doan) OR (trang doan)) phung cong manh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu quang)) - hanh ((trung doan) OR (trang doan)) phung cong manh toan cau*.