Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
cong cuoc » song cuoc, trong cuoc, luong cuoc
hang khoa » dung khoa
danh nhan » doanh nhan, thanh nhan, benh nhan
cach hoc » cach thuc, cach thoi, dich hoc
cong coc » cong cac, cong co, cong uoc
khoa hoc » hoa hoc
thi danh » thai danh, thi hanh, thi anh
te cach » ve cach, te sach, tu cach
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
xa thi » xa thai, ha thi, ta thi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cach hoc tap, nghien cua ((cong coc) OR (cong cuoc)) hang khoa hoc xa thi danh nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cach hoc tap, nghien cua ((cong coc) OR (cong cuoc)) hang khoa hoc xa thi danh nhan va".
• Adding a wildcard symbol may retrieve word variants: te cach hoc tap, nghien cua ((cong coc) OR (cong cuoc)) hang khoa hoc xa thi danh nhan va*.