Perhaps you should try some spelling variations:
hoc thanh » hoc nhanh, hoan thanh, hoc phan
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, anh hoc
sach hoi » sach doi, sach moi, cach thoi
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
pho hoc » phoi hoc, cho hoc, pho ho
hoa ban » hoa dan, hoa van, hoa han

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((mach hoc) or (sach hoi)) tap, nghien cuu mot hoc thanh pho hoc ma hoa ban thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (sach hoi)) tap, nghien cuu mot hoc thanh pho hoc ma hoa ban thanh van.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (sach hoi)) tap, nghien cuu mot hoc thanh pho hoc ma hoa ban thanh van*.