Perhaps you should try some spelling variations:
nhanh khang » nhanh thang, nhanh thanh, nhanh chong
kon mach » ke mach, ban mach
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
thuoc va » thuc va, thuoc ma, thuong va
cua phan » cua nhan, cua phap, cua han
phan dau » phan tu, hang dau
hoi cua » hoi chuc
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: kon mach hoc tap, nghien cuu dong hoc ((nhanh khang) OR (nhanh quang)) thuoc va hoi cua phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "kon mach hoc tap, nghien cuu dong hoc ((nhanh khang) OR (nhanh quang)) thuoc va hoi cua phan dau".
• Adding a wildcard symbol may retrieve word variants: kon mach hoc tap, nghien cuu dong hoc ((nhanh khang) OR (nhanh quang)) thuoc va hoi cua phan dau*.