Perhaps you should try some spelling variations:
nhanh hoan » thanh hoang, thanh hoa, khanh hoa
hoc nhanh » hoc nganh, hoc phan
cuu nang » chuc nang, cam nang, cuu van
nang hoc » nang doc, nang luc, dong hoc
hoan hoc » hoa hoc, toan hoc, hoang hoa
phan van » pham van, thanh van, luan van
tu mach » tu cach, tu hach, tu sach
tu manh » tu minh, tu hanh, vu manh
va phan » van phan, va phat, va phap
ma hoi » mai hoi, xa hoi, ma 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) OR (tu manh)) hoc tap, nghien cuu nang hoc nhanh hoan hoc ma hoi va phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu mach) OR (tu manh)) hoc tap, nghien cuu nang hoc nhanh hoan hoc ma hoi va phan van".
• Adding a wildcard symbol may retrieve word variants: ((tu mach) OR (tu manh)) hoc tap, nghien cuu nang hoc nhanh hoan hoc ma hoi va phan van*.