Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tran tuan » tran xuan, tran quang, tran thanh
dung cua » dung luan, dung cho
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban

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