Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
thuoc mach » thuoc sach, thuong mach, thuoc ma
chong doc » chong dich, chon loc, hong duc
mach hoc » cach hoc, dich hoc, anh hoc
phan van » pham van, thanh van, luan van
mot hoc » mon hoc, mo hoc, bot hoc
va phan » van phan, va phat, va phap
doc ma » duoc ma, hoc ma, doc va
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: thuoc mach hoc tap, nghien cuu ((mot hoc) OR (mot goc)) nhanh chong doc ma hoi va phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc mach hoc tap, nghien cuu ((mot hoc) OR (mot goc)) nhanh chong doc ma hoi va phan van".
• Adding a wildcard symbol may retrieve word variants: thuoc mach hoc tap, nghien cuu ((mot hoc) OR (mot goc)) nhanh chong doc ma hoi va phan van*.