Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thuc hang » thuc hanh, thu hang, thuy hang
phuc hang » phuc thanh, phuc khanh, phuc khong
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
phan cac » nhan cach, phan dau, phan lap

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 (chinh sach)) - tinh toan ((thuc hang) OR (phuc hang)) cong toan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chinh sach)) - tinh toan ((thuc hang) OR (phuc hang)) cong toan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chinh sach)) - tinh toan ((thuc hang) OR (phuc hang)) cong toan phan cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chinh sach)) - tinh toan ((thuc hang) OR (phuc hang)) cong toan phan cac*.