Perhaps you should try some spelling variations:
chuc nganh » chuc nang, hoc nganh, cac nganh
luc nganh » luc ngan, luat nganh, luc canh
khong hoc » khung hoc, thong hoc, khong thuoc
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
phan tao » nhan tao, phan tap, phan tan
va phan » van phan, va phat, va phap
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 hoc tap, nghien cuu dong ((luc nganh) OR (chuc nganh)) khong hoc ma hoi va phan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoc tap, nghien cuu dong ((luc nganh) OR (chuc nganh)) khong hoc ma hoi va phan tao".
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghien cuu dong ((luc nganh) OR (chuc nganh)) khong hoc ma hoi va phan tao*.