Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tieu sang » chieu sang, tieu dung, tinh sang
tiem nang » tin nang, tich nang
cua thong » cua thuong, cua khong, cua tong
hanh ban » thanh ban, hanh san, hanh han
hang ban » hang luan, hang va, hang tai
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sang) or (tiem nang)) - ((hanh ban) OR (hang ban)) cua thong cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sang) OR (tiem nang)) - ((hanh ban) OR (hang ban)) cua thong cong tac than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sang) or (tiem nang)) - ((hanh ban) OR (hang ban)) cua thong cong tac than cau".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sang) or (tiem nang)) - ((hanh ban) OR (hang ban)) cua thong cong tac than cau*.