Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nhanh khoa » nhan khoa, nganh khoa, hang khoa
thu canh » thuc hanh, thu cong, thu ban
canh toi » canh thin, hanh thoi, hanh tot
cong hoc » dong hoc, cong coc, cong ho
cong hoa » dong hoa, dong hoc, hang hoa
khoa hoc » hoa hoc
dan nhan » danh nhan, dan chan, van nhan
toi tap » toi gap, toan tap, tong tap
hoi dan » hoa dan, hoc dan, hoi dap
nhan va » nhan tai, nhan dan, nhan tao
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: thu canh toi tap, nghien cua ((cong hoc) OR (cong hoa)) nhanh khoa hoc xa hoi dan nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu canh toi tap, nghien cua ((cong hoc) OR (cong hoa)) nhanh khoa hoc xa hoi dan nhan va".
• Adding a wildcard symbol may retrieve word variants: thu canh toi tap, nghien cua ((cong hoc) OR (cong hoa)) nhanh khoa hoc xa hoi dan nhan va*.