Perhaps you should try some spelling variations:
tuan nguyen » toan nguyen, tran nguyen, thai nguyen
xuan nguyen » toan nguyen, tran nguyen, hoang nguyen
nghe danh » nghe dan, nghe sinh, nghe san
danh hoc » dan hoc, danh hoa, anh hoc
hoc khoa » hoc pho
cuu cua » cau cua, cu cua, chu cua
cua qua » cua quan, cua rua, cuu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: cong nghe danh hoc khoa ((xuan nguyen) or (tuan nguyen)) ((cuu cua) or (cua qua)) trinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cong nghe danh hoc khoa ((xuan nguyen) OR (tuan nguyen)) ((cuu cua) OR (cua qua)) trinh.
• Adding a wildcard symbol may retrieve word variants: cong nghe danh hoc khoa ((xuan nguyen) or (tuan nguyen)) ((cuu cua) or (cua qua)) trinh*.