Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
chong thuoc » khong thuoc, cong thuc, hong phuoc
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thuoc tai » nuoc tai, hoc tai, thuoc ma
minh hoc » sinh hoc, hinh hoc, tinh hoc
cong hoc » cong hoa, cong coc, cong ho
dong hoc » dong co, dong luc
nhan van » nhan dan, nhan va, phan van
tu minh » thu minh, vu minh, thi minh
tai hai » thi hai, dai hai, tai ha
va nhan » van nhan, ca nhan, va phan
hai va » hai van, thai va, hoi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu minh hoc tap, nghien thu ((cong hoc) or (dong hoc)) nhanh chong thuoc tai hai va nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu minh hoc tap, nghien thu ((cong hoc) OR (dong hoc)) nhanh chong thuoc tai hai va nhan van.
• Adding a wildcard symbol may retrieve word variants: tu minh hoc tap, nghien thu ((cong hoc) or (dong hoc)) nhanh chong thuoc tai hai va nhan van*.