Perhaps you should try some spelling variations:
thu nghiem » thuc nghiem, thi nghiem
hoach thu » hoach thay, doanh thu, hoach su
nghiem xu » nghiem su, nghiem xuan, nghiem ngu
sach dao » lanh dao
dao nghe » day nghe, da nghe, dat nghe
nghe 新 » nghe _
tu sach » thu sach, su sach, te sach
新 hoc » y hoc, _ hoc, o hoc
xu hoc » tu hoc, du hoc, su hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach dao nghe 新 hoc ) or ( thu hoach thu nghiem xu hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach dao nghe 新 hoc ) OR ( thu hoach thu nghiem xu hoc )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach dao nghe 新 hoc ) or ( thu hoach thu nghiem xu hoc ))*.