Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
van phong » van dong, hai phong
phong tao » phong trao, phong tai, phong tho
mach hoc » cach hoc, dich hoc, anh hoc
hinh hoc » sinh hoc, tin hoc, benh hoc
cuu hoa » cuu khoa, cuu hoan, cau hoa
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 ((mach hoc) or (hinh hoc)) tap, nghien cuu hoa hoc nganh hoa hoc ma hai van phong tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (hinh hoc)) tap, nghien cuu hoa hoc nganh hoa hoc ma hai van phong tao.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (hinh hoc)) tap, nghien cuu hoa hoc nganh hoa hoc ma hai van phong tao*.