Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh dong » nganh cong, nhanh dong, nganh nong
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
thu thai » thuc thai, thu thap, thu hai
cong hoc » cong hoa, cong coc, cong ho
dong hoc » dong co, dong luc
cac thu » cach thuc, cac thoi
xa thai » ca thai, a thai, da thai
su cac » tu cac, su cao, su can
xa hai » xua hai, xa hoi, xa dai

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

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