Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
cong thuoc » cong thuc, dong thuoc, long thuoc
luc nganh » luc ngan, chuc nganh, luat nganh
thuoc tai » nuoc tai, hoc tai, thuoc ma
sach hoi » sach doi, sach moi, cach thoi
cuu dong » cuu cong, cuu long, luu dong
cuu tong » cuu cong, cuu tinh, huu tung
nhan van » nhan dan, nhan va, phan van
co sach » bo sach, cuon sach, hoc sach
tai hoi » tai khoi, dai hoi, tai hai
va nhan » van nhan, ca nhan, va phan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach hoi dap, nghien ((cuu dong) OR (cuu tong)) luc nganh cong thuoc tai hoi va nhan van~".
• Adding a wildcard symbol may retrieve word variants: co sach hoi dap, nghien ((cuu dong) OR (cuu tong)) luc nganh cong thuoc tai hoi va nhan van*.