Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
luc nganh » luc ngan, chuc nganh, luat nganh
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
cuu nang » chuc nang, cam nang, cuu van
cong hoc » dong hoc, cong hoa, cong coc
phan tao » nhan tao, phan tap, phan tan
tu sach » thu sach, su sach, te sach
hoc bai » hoc dai, hoc giai
bai hoi » bai choi, bai hoc, dai hoi
va phan » van phan, va phat, va phap

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, nghien ((cuu dong) or (cuu nang)) luc nganh cong hoc bai hoi va phan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien ((cuu dong) OR (cuu nang)) luc nganh cong hoc bai hoi va phan tao.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien ((cuu dong) or (cuu nang)) luc nganh cong hoc bai hoi va phan tao*.