Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
luc nganh » luc ngan, chuc nganh, luat nganh
cuu tong » cuu cong, cuu tinh, huu tung
tong luc » dong luc, tong cuc, truong luc
cong coc » cong cuoc, cong cac, cong co
phan tao » nhan tao, phan tap, phan tan
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hoi tap » hoi dap, hoc tap, hoi tai
va phan » van phan, va phat, va phap
coc ma » hoc ma, co ma, coc ha
hoa va » hoa van, hoa xa, hoa vo

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