Perhaps you should try some spelling variations:
thi nghiem » thuc nghiem
nghiem dau » nghiep dau, nghiem va, nghiem ban
hoach thi » hoach thu, hoach toi, hoach thay
thu khanh » thi khanh, nhu khanh, thu thanh
khanh hoa » thanh hoa, hang hoa
hoa nghe » hoc nghe, khoe nghe, chon nghe
dau hoc » du hoc, day hoc, cau hoc
dan hoc » van hoc, dan toc, toan hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hoach thi nghiem dau hoc ) or ( thu khanh hoa nghe ((dan hoc) OR (dai hoc)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach thi nghiem dau hoc ) OR ( thu khanh hoa nghe ((dan hoc) OR (dai hoc)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thu hoach thi nghiem dau hoc ) or ( thu khanh hoa nghe ((dan hoc) OR (dai hoc)) ))".
• Adding a wildcard symbol may retrieve word variants: (( thu hoach thi nghiem dau hoc ) or ( thu khanh hoa nghe ((dan hoc) OR (dai hoc)) ))*.