Perhaps you should try some spelling variations:
cong quang » luong quang, thong quang, duong quang
hien hanh » dieu hanh
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
anh nang » ganh nang, anh bang, anh dang
cua dung » cua dang, cua dong, qua dung
toan cau » toan cao, toan ban, toan tap
van dau » van dao, phan dau

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 hanh - ((hanh mang) or (anh nang)) cua dung cong quang ((toan cau) or (van dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - ((hanh mang) OR (anh nang)) cua dung cong quang ((toan cau) OR (van dau)).
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - ((hanh mang) or (anh nang)) cua dung cong quang ((toan cau) or (van dau))*.