Perhaps you should try some spelling variations:
trong hinh » trong thinh, trong kinh, trong sinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
chua dong » ha dong, huy dong, hoa dong
hinh toan » tinh toan, thanh toan, trinh toan
anh dang » anh dong, anh dung, anh bang
cua dong » cua cong, cua dang, cua nong
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 ((cua dong) OR (chua dong)) trong hinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cao hieu xanh - anh dang ((cua dong) OR (chua dong)) trong hinh toan cau*".