Perhaps you should try some spelling variations:
nhanh thuong » khanh thuong, nhanh chuong, thanh thuong
thuong hoc » truong hoc, tuong hoc, thuong ho
hoc nhanh » hoc nganh, hoc phan
hoach ha » hoach va, hoach xay, hoach hoi
sach moi » sach doi, sach hoi, bach mai
van tuan » van quan, van ban, anh tuan
tuan tai » toan tai, quan tai, tan tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hai van » thai van, ha van, hai tan
ma hai » ta hai, va hai, xa hai

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 ha) or (sach moi)) tap, nghien cuu mon hoc nhanh thuong hoc ma hai van tuan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((hoach ha) OR (sach moi)) tap, nghien cuu mon hoc nhanh thuong hoc ma hai van tuan tai.
• Adding a wildcard symbol may retrieve word variants: tu ((hoach ha) or (sach moi)) tap, nghien cuu mon hoc nhanh thuong hoc ma hai van tuan tai*.