Perhaps you should try some spelling variations:
trong trinh » trong tinh, trang trinh, trong thinh
dong trong » duong trong, dung trong, cong trong
trinh toan » tinh toan, thanh toan, trinh han
hieu xanh » chieu xanh, hieu manh, hieu nganh
anh dang » anh dong, anh bang, anh danh
anh dung » anh dong, anh huong, sach dung
cua dong » chua dong, cua cong, cua dang
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: cao hieu xanh - ((anh dang) or (anh dung)) cua dong trong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cao hieu xanh - ((anh dang) OR (anh dung)) cua dong trong trinh toan cau*.