Perhaps you should try some spelling variations:
cong thuoc » cong thuc, dong thuoc, long thuoc
nganh cong » nhanh chong, thanh cong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
luc nganh » luc ngan, chuc nganh, luat nganh
thu sach » tu sach, thuat sach, thuoc sach
van phan » van phong, van thanh, luan phan
thuoc ma » hoc ma, duoc ma
cong luc » dong luc, cong suc, cong duc
phan dan » phan dang, phan dau, nhan dan
hoi tap » hoi dap, hoc tap, hoi tai
so sach » so sanh, bo sach, co sach
hoi van » hoi va, hoi dan, hai van
ma hoi » mai hoi, xa hoi, ma hoa

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) or (so sach)) hoi tap, nghien thu cong luc nganh cong thuoc ma hoi van phan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (so sach)) hoi tap, nghien thu cong luc nganh cong thuoc ma hoi van phan dan.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (so sach)) hoi tap, nghien thu cong luc nganh cong thuoc ma hoi van phan dan*.