Perhaps you should try some spelling variations:
thac nghiem » trac nghiem, thi nghiem, thu nghiem
thuc nghiem » trac nghiem
thuong hoc » truong hoc, tuong hoc, thuong ho
thuoc hoc » thuoc ho, thuoc nhom, duoc hoc
phai thuc » phap thuc, pham thuc, phai thu
nghiem du » nghiem dau, nghiem d, nghiem de
vu khai » vu kham, vu hai, vu khac
cu phai » cu phap, vu phai, cuu phat
du hoc » tu hoc, duoc hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu khai thac nghiem ((thuoc hoc) or (thuong hoc)) ) or ( cu phai thuc nghiem du hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu khai thac nghiem ((thuoc hoc) OR (thuong hoc)) ) OR ( cu phai thuc nghiem du hoc )).
• Adding a wildcard symbol may retrieve word variants: (( vu khai thac nghiem ((thuoc hoc) or (thuong hoc)) ) or ( cu phai thuc nghiem du hoc ))*.