Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
hanh trinh » canh tranh, hanh chinh
kinh nhiem » kinh nghiem, kinh hien, binh khiem
nhiem cua » nhiet cua, nhiem chuan, nghiep cua
thiet du » thiet de, thiet yeu, thiet ke
te sach » toc sach
cua hoc » cua hoi, cua thuoc, cua nuoc
du hoc » tu hoc, duoc hoc
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thuc hanh trinh thiet du hoc ) or ( te sach kinh nhiem cua hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thuc hanh trinh thiet du hoc ) OR ( te sach kinh nhiem cua hoc )).
• Adding a wildcard symbol may retrieve word variants: (( thuc hanh trinh thiet du hoc ) or ( te sach kinh nhiem cua hoc ))*.