Perhaps you should try some spelling variations:
chuong dong » chuong duong, phuong dong, huong dong
chieu tach » chiet tach, chieu sach, chiu trach
trong cach » trong mach, trong canh, trong hach
doi chieu » doc hieu, doi chi, ho chieu
tranh cac » trinh cac, thanh cac, tranh cai
dong tan » duong tan, dong tai, dong san
tan toan » tan tran, tap toan, van toan
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: doi chieu tach - hanh ((((trong cach) OR (trong cac))) or (tranh cac)) chuong dong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tach - hanh ((((trong cach) OR (trong cac))) OR (tranh cac)) chuong dong tan toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tach - hanh ((((trong cach) OR (trong cac))) or (tranh cac)) chuong dong tan toan cao*".