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 mai » thuoc ma, thuoc tai, thuoc moi
sach hoc » cach hoc, sach hoi, mach hoc
tu sach » thu sach, su sach, te sach
va dong » van dong, xa dong, lao dong
ha dong » hoat dong, van dong
mai hoi » mai khoi, dai hoi, lai hoi
nhan va » nhan tai, nhan dan, nhan tao
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghiep ((va dong) or (ha dong)) luc nganh cong thuoc mai hoi ca nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghiep ((va dong) OR (ha dong)) luc nganh cong thuoc mai hoi ca nhan va.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghiep ((va dong) or (ha dong)) luc nganh cong thuoc mai hoi ca nhan va*.