Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh sinh » hanh tinh, hanh dinh, hinh sinh
dong cong » duong cong, dung cong, dang cong
sinh cua » manh cua, dinh cuu, sinh va
cua dong » chua dong, cua cong, cua dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh sinh cua dong cong ((tinh toan) or (thanh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh sinh cua dong cong ((tinh toan) OR (thanh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh sinh cua dong cong ((tinh toan) or (thanh toan)) cau*.