Perhaps you should try some spelling variations:
cdieu hanh » chieu xanh, deu hanh, dieu danh
hoang tran » hoang tuan, hoang thanh, hoang van
tong luan » tang luan, dung luan, hang luan
luan dung » lan dung, luan dong, luan hung
dang tran » dang thanh, quang tran, dang van
ha tong » han tong, ha dong, ha tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((dieu hanh) or (cdieu hanh)) - ha tong luan dung trong ((dang tran) OR (hoang tran)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((dieu hanh) OR (cdieu hanh)) - ha tong luan dung trong ((dang tran) OR (hoang tran)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((dieu hanh) or (cdieu hanh)) - ha tong luan dung trong ((dang tran) OR (hoang tran)) cao".
• Adding a wildcard symbol may retrieve word variants: doc ((dieu hanh) or (cdieu hanh)) - ha tong luan dung trong ((dang tran) OR (hoang tran)) cao*.