Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong lang, cong nong
hanh tranh » canh tranh, hanh trinh, hanh trang
cong quang » luong quang, thong quang, duong quang
doi chieu » doc hieu, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
cua tong » cua cong, cua dong, cua nong
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (doi chi)) tinh - hanh tranh cua tong ((cong ngang) or (cong quang)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) tinh - hanh tranh cua tong ((cong ngang) OR (cong quang)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) tinh - hanh tranh cua tong ((cong ngang) or (cong quang)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) tinh - hanh tranh cua tong ((cong ngang) or (cong quang)) toan cau*.