Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh toan » thanh hoa, thanh san, tinh toan
hoc thieu » toc thieu, hoc hien
hanh tong » hanh trong, han tong, hanh dong
tong quan » thong quan, tong luan, luong quan
quan dung » quang dung, quan duong, qua dung
dung cong » dung trong
manh toan » anh tuan, tinh 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 thieu xanh - hanh tong quan dung cong ((((hach toan) OR (manh toan))) OR (thanh toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh tong quan dung cong ((((hach toan) OR (manh toan))) or (thanh toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tong quan dung cong ((((hach toan) OR (manh toan))) or (thanh toan)) cau*.