Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cong quang » luong quang, thong quang, duong quang
quang toan » quang tuan, quang tran, quang doan
hien xanh » hien hanh, hien nhanh, chieu xanh
cua dong » chua dong, cua dang, cua nong
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: hoc hien xanh - hanh trinh ((cua dong) or (cua cong)) cong quang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh ((cua dong) OR (cua cong)) cong quang toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh ((cua dong) or (cua cong)) cong quang toan cau*.