Perhaps you should try some spelling variations:
luc nganh » luc ngan, chuc nganh, luat nganh
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach moi » sach doi, sach hoi, sach bai
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
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: so ((sach moi) OR (bach mai)) tap, nghien cuu dong luc nganh hoa hoc xa hoi ca nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach moi) OR (bach mai)) tap, nghien cuu dong luc nganh hoa hoc xa hoi ca nhan va".
• Adding a wildcard symbol may retrieve word variants: so ((sach moi) OR (bach mai)) tap, nghien cuu dong luc nganh hoa hoc xa hoi ca nhan va*.