Perhaps you should try some spelling variations:
nhanh khung » nhanh hung, nhanh chuong, nhanh chong
luc nhanh » luc nhan, luc nganh, luc canh
khung hoc » chung hoc, nhung hoc, thuong hoc
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
hang tai » hang va, dung tai
va hang » van hang, va nang, va lang
hoa va » hoa van, hoa xa, hoa vo

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 (cach hoc)) tap, nghien cuu dong luc nhanh khung hoc ma hoa va hang tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (cach hoc)) tap, nghien cuu dong luc nhanh khung hoc ma hoa va hang tai.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (cach hoc)) tap, nghien cuu dong luc nhanh khung hoc ma hoa va hang tai*.