Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
anh quang » anh xquang, anh quan, nhanh quang
quang cua » quan cua, quang tuan, quang huy
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((dieu hanh) or (hien nhanh)) - anh quang cua ((nhung cong) OR (thong cong)) van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu hanh) OR (hien nhanh)) - anh quang cua ((nhung cong) OR (thong cong)) van tuan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((dieu hanh) or (hien nhanh)) - anh quang cua ((nhung cong) OR (thong cong)) van tuan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu hanh) or (hien nhanh)) - anh quang cua ((nhung cong) OR (thong cong)) van tuan ban*.