Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hoc chieu » hoc thieu, hoc hien, hoc dieu
quan dung » quang dung, quan duong, qua dung
dang toan » dan toan, dung toan, dang thanh
dang tran » dang thanh, quang tran, hoang tran
ho chieu » theo chieu, hoc thieu, doi chieu

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

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