Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh quan » tinh quang, trinh luat, trinh han
thong cong » trong cong, tong cong, thong thong
thanh toan » thanh hoa, thanh san, tinh toan
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh luan
hach toan » manh toan

You may be able to get more results by adjusting your search query.

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