Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh hoa » thanh hoa, khanh hoa, danh hoa
van thanh » ban thanh, van tuan
thanh tai » thanh hai, thanh toan, doanh tai
thu sach » tu sach, thuat sach, thuoc sach
sach hoi » sach doi, sach moi, cach thoi
cong coc » cong cuoc, cong co, cong uoc
cong cac » cuong cac, cong tac, cong cau
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: thu sach hoi dap, nghien cua ((cong coc) OR (cong cac)) nganh hoa hoc xa hoi van thanh tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoi dap, nghien cua ((cong coc) OR (cong cac)) nganh hoa hoc xa hoi van thanh tai".
• Adding a wildcard symbol may retrieve word variants: thu sach hoi dap, nghien cua ((cong coc) OR (cong cac)) nganh hoa hoc xa hoi van thanh tai*.