Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
ngan khoa » nganh khoa, nhan khoa, nhuan khoa
mach hoc » cach hoc, dich hoc, anh hoc
hinh hoc » sinh hoc, tin hoc, benh hoc
cong luc » dong luc, cong suc, cong duc
luc ngan » luc nganh, luc nhan, luat ngan
khoa hoc » hoa hoc
cac phan » cac nhan, cao phan, cap phan
phan van » pham van, thanh van, luan van
hoc cac » hoc cao
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

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 thu cong luc ngan khoa hoc xa hoc cac phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (hinh hoc)) tap, nghien thu cong luc ngan khoa hoc xa hoc cac phan van.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (hinh hoc)) tap, nghien thu cong luc ngan khoa hoc xa hoc cac phan van*.