Perhaps you should try some spelling variations:
chau nhan » chan nhan, chau phan, ca nhan
thu sach » tu sach, thuat sach, thuoc sach
sach dao » lanh dao
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
luc ngan » luc nganh, luc nhan, luat ngan
ngan hoa » nganh hoa, nhan hoa, nganh khoa
cau nhan » ca nhan, cu nhan, cam nhan
dao tac » dao tao, dao tuc, dao tay
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 dao tac, nghien cuu dong luc ngan hoa hoc ma hoi ((cau nhan) OR (chau nhan)) dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach dao tac, nghien cuu dong luc ngan hoa hoc ma hoi ((cau nhan) OR (chau nhan)) dan".
• Adding a wildcard symbol may retrieve word variants: thu sach dao tac, nghien cuu dong luc ngan hoa hoc ma hoi ((cau nhan) OR (chau nhan)) dan*.