Perhaps you should try some spelling variations:
nghiem thuoc » nghiem duoc, nghiem hoa, nghi thuc
nhanh chong » thanh cong, khanh phong
cach thoi » cac thoi, cach thuc, cach noi
chong hoc » chung hoc, chong doc, thong hoc
thoi tap » toi tap, hoc tap, thoi dai
cong hoc » dong hoc, cong coc, cong ho
cong hoa » dong hoa, dong hoc, hang hoa
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
tu cach » tu cac
hoi van » hoi va, hoi dan, hai van
hoc xa » hoc ma

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, nghiem thuoc ((cong hoc) OR (cong hoa)) nhanh chong hoc xa hoi van nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thoi tap, nghiem thuoc ((cong hoc) OR (cong hoa)) nhanh chong hoc xa hoi van nhan van".
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghiem thuoc ((cong hoc) OR (cong hoa)) nhanh chong hoc xa hoi van nhan van*.