Perhaps you should try some spelling variations:
hoach hoi » hoc hoi, hoach ha, sach hoi
thanh van » thanh san, thanh toan, thanh phan
sach doi » sach hoi, sach moi, sach dao
tan khoa » toan khoa, tran khoa, san khoa
khoa hoc » hoa hoc
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc tan » hoc tang, hoc dan, hoc tap
hoi gia » ho gia, hoc gia, hoa gia
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 ((hoach hoi) or (sach doi)) tap, nghien cuu mon hoc tan khoa hoc xa hoi gia thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((hoach hoi) OR (sach doi)) tap, nghien cuu mon hoc tan khoa hoc xa hoi gia thanh van.
• Adding a wildcard symbol may retrieve word variants: tu ((hoach hoi) or (sach doi)) tap, nghien cuu mon hoc tan khoa hoc xa hoi gia thanh van*.