Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thang long » thanh cong
lang trong » dung trong, cong trong, dong trong
trong tinh » truong tinh, trong kinh, trong sinh
hieu manh » hieu nganh, dieu hanh, hien hanh
long quan » luong quan, long quang, tong quan
quan lang » quan hoang, gian lang, quan luan
toan cau » 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: doc ((chieu xanh) or (hieu manh)) - thang long quan lang trong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu xanh) OR (hieu manh)) - thang long quan lang trong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu xanh) or (hieu manh)) - thang long quan lang trong tinh toan cau*.