Perhaps you should try some spelling variations:
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
gian dan » gian lang
tu hinh » tu minh, tu hanh, su hinh
cuu mon » cuu mo, cuu mot, cuu cong
va gian » va gianh, van gian, va giai
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: tu hinh hoc tap, nghien cuu mon ((hoc hang) or (hoc tang)) khoa hoc xa hoi va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu hinh hoc tap, nghien cuu mon ((hoc hang) OR (hoc tang)) khoa hoc xa hoi va gian dan.
• Adding a wildcard symbol may retrieve word variants: tu hinh hoc tap, nghien cuu mon ((hoc hang) or (hoc tang)) khoa hoc xa hoi va gian dan*.