Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua trong » cua truong, cua trung, qua trong
sinh cua » manh cua, dinh cuu, sinh va
cong tap » cuong tap, cong tac, cong tan
quan ban » quang ban, quan van, luan ban
qua ban » cua ban, qua quan

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 (chieu xanh)) - hanh sinh cua trong cong tap ((quan ban) OR (qua ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu hanh) OR (chieu xanh)) - hanh sinh cua trong cong tap ((quan ban) OR (qua ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((dieu hanh) or (chieu xanh)) - hanh sinh cua trong cong tap ((quan ban) OR (qua ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu hanh) or (chieu xanh)) - hanh sinh cua trong cong tap ((quan ban) OR (qua ban))*.