Perhaps you should try some spelling variations:
cuc doanh » cac doanh, cua doanh, muc doanh
doanh hoa » doanh khoa, doanh hoan, danh hoa
thu sinh » thu minh, thu kinh, thuoc sinh
cuu cong » cua cong, thu cong, cac cong
cong cuc » cong chuc, cong cuoc, cong cu
dan nhan » danh nhan, dan chan, van nhan
tu sinh » tuc sinh, tu minh, tu kinh
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
xa hoa » xa khoa, xa hoi, ma hoa

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sinh) OR (thu sinh)) hoc tap, nghien cuu cong cuc doanh hoa hoc xa hoa dan nhan va~".
• Adding a wildcard symbol may retrieve word variants: ((tu sinh) OR (thu sinh)) hoc tap, nghien cuu cong cuc doanh hoa hoc xa hoa dan nhan va*.