Perhaps you should try some spelling variations:
quang thuoc » dung thuoc, dang thuoc, quang hoc
nghien huy » nghien cuu, nguyen huy, nghiep quy
cach thoi » cac thoi, cach thuc, cach noi
hoc nhanh » hoc nganh, hoc phan
thuoc moi » hoc moi, thuoc ma, thuoc tai
thoi tap » toi tap, hoc tap, thoi dai
nhan van » nhan dan, nhan va, phan van
tu cach » tu cac
huy hoa » huy khoa, thuy hoa, huy hoc
hoi cua » hoi chuc
hoi ca » hoi cac, hoi cau, hoi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thoi tap, nghien huy hoa hoc nhanh quang thuoc moi ((hoi ca) or (hoi cua)) nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tap, nghien huy hoa hoc nhanh quang thuoc moi ((hoi ca) OR (hoi cua)) nhan van.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien huy hoa hoc nhanh quang thuoc moi ((hoi ca) or (hoi cua)) nhan van*.