Perhaps you should try some spelling variations:
tru hinh » tru tinh, truc tinh, tra chinh
hinh hoc » sinh hoc, tin hoc, benh hoc
hoc hang » hoc hanh, hoc bang, hoc han
hoc tang » hoc bang, hoc tan, hoc tieng
khoa hoc » hoa hoc
cau luan » cu luan, dau luan, lau luan
hoi cau » hoi chu, hoc cau, hoa cau
cuu co » huu co, cua co, cuu mo
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tru hinh hoc tap, nghien cuu co ((hoc hang) or (hoc tang)) khoa hoc xa hoi cau luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tru hinh hoc tap, nghien cuu co ((hoc hang) OR (hoc tang)) khoa hoc xa hoi cau luan van.
• Adding a wildcard symbol may retrieve word variants: tru hinh hoc tap, nghien cuu co ((hoc hang) or (hoc tang)) khoa hoc xa hoi cau luan van*.