Perhaps you should try some spelling variations:
thi nghiem » thuc nghiem
hoach thi » hoach thu, hoach toi, hoach thay
dao nghe » day nghe, da nghe, dat nghe
duoc hoc » quoc hoi
tu lanh » tu hanh, tu lenh, tu manh
nghe de » nghe det, nghe di, nghe te
de hoc » te hoc, du hoc, dien hoc
so hoc » co hoc, so hoa, o hoc
mo hoc » mon hoc, co 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 lanh dao nghe de hoc ) or ( thu hoach thi nghiem ((duoc hoc) or (((so hoc) OR (mo hoc)))) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu lanh dao nghe de hoc ) OR ( thu hoach thi nghiem ((duoc hoc) OR (((so hoc) OR (mo hoc)))) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu lanh dao nghe de hoc ) or ( thu hoach thi nghiem ((duoc hoc) or (((so hoc) OR (mo hoc)))) ))*".