Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
chuc nganh » chuc nang, hoc nganh, cac nganh
cong chuc » cong thuc, cong cu, cong cua
nganh hoa » thanh hoa, khanh hoa, danh hoa
thu sach » tu sach, thuat sach, thuoc sach
sach hoi » sach doi, sach moi, cach thoi
tang tai » hang tai, dung tai, sang tao
hoi van » hoi va, hoi dan, hai van
tan tai » toan tai, tuan tai, van tai
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 chuc nganh hoa hoc xa hoi van ((tan tai) OR (tang tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoi dap, nghien cua cong chuc nganh hoa hoc xa hoi van ((tan tai) OR (tang tai))".
• Adding a wildcard symbol may retrieve word variants: thu sach hoi dap, nghien cua cong chuc nganh hoa hoc xa hoi van ((tan tai) OR (tang tai))*.