Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nhanh dong » hanh dong, nhanh chong, anh dong
hoc nhanh » hoc nganh, hoc phan
van thanh » ban thanh, van tuan
cach tuc » cach thuc, cach tu, bach tuoc
cong hoc » cong hoa, cong coc, cong ho
dong hoc » dong co, dong luc
su cach » su sach, tu cach, su cac
ca thai » chat thai, hoa thai
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach tuc tap, nghien thu cong hoc nhanh dong hoc ((xa hai) or (ca thai)) van thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach tuc tap, nghien thu cong hoc nhanh dong hoc ((xa hai) OR (ca thai)) van thanh san.
• Adding a wildcard symbol may retrieve word variants: su cach tuc tap, nghien thu cong hoc nhanh dong hoc ((xa hai) or (ca thai)) van thanh san*.