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
dong luc » nang luc
cong hoc » dong hoc, cong hoa, cong coc
phan tao » nhan tao, phan tap, phan tan
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, lai hoi, mai doi
dai hoi » dai hoc, dai hai, dai moi
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 luc nganh cong hoc ((mai hoi) OR (dai hoi)) va phan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu dong luc nganh cong hoc ((mai hoi) OR (dai hoi)) va phan tao".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu dong luc nganh cong hoc ((mai hoi) OR (dai hoi)) va phan tao*.