Perhaps you should try some spelling variations:
van nghiem » van nghe, van nghia, quang nghiem
hoach van » hoach va, hoach san, hoach toan
nghiem su » nghiem xu, nghiem ngu, nghiem dau
dao nghe » day nghe, da nghe, dat nghe
tu lanh » tu hanh, tu lenh, tu manh
de hoc » du hoc, dien hoc
su hoc » du hoc, so hoc, su ho

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 ((((tu hoc) or (te hoc))) or (de hoc)) ) or ( thu hoach van nghiem su hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu lanh dao nghe ((((tu hoc) OR (te hoc))) OR (de hoc)) ) OR ( thu hoach van nghiem su hoc )).
• Adding a wildcard symbol may retrieve word variants: (( tu lanh dao nghe ((((tu hoc) or (te hoc))) or (de hoc)) ) or ( thu hoach van nghiem su hoc ))*.