Perhaps you should try some spelling variations:
quang trong » quang truong, quang trung, quan trong
hanh trinh » canh tranh, hanh chinh
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh tran » trinh trang, trinh toan, trinh tren
trong dang » truong dang, trong dan, trong dong
hieu manh » hieu nganh, dieu hanh, hien hanh
dang toan » dang tran, dan toan, dung toan
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 ((chieu xanh) or (hieu manh)) - hanh trinh tran quang trong dang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hieu manh)) - hanh trinh tran quang trong dang toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (hieu manh)) - hanh trinh tran quang trong dang toan cao*.