Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoa nhanh » hoc nhanh, hoa thanh, hoa khanh
sach hoc » cach hoc, sach hoi, mach hoc
cac cong » cua cong
cong hoa » dong hoa, dong hoc, hang hoa
gian dan » gian lang
su sach » so sach, vu sach
duoc xa » duoc ma, duoc va, duoc ha
ca gian » ca giang, ca giao, va gian
doc xa » hoc xa, do xa, doc va
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoc tap, nghien cac cong hoa nhanh chong ((doc xa) OR (duoc xa)) hoi ca gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoc tap, nghien cac cong hoa nhanh chong ((doc xa) OR (duoc xa)) hoi ca gian dan".
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cac cong hoa nhanh chong ((doc xa) OR (duoc xa)) hoi ca gian dan*.