Perhaps you should try some spelling variations:
luc nganh » luc ngan, chuc nganh, luat nganh
nganh hoa » thanh hoa, khanh hoa, danh hoa
hoc sach » hoc sinh, hoc cac, hoc anh
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
cong luc » dong luc, cong suc, cong duc
hoi tap » hoi dap, hoc tap, hoi tai
va nhan » van nhan, ca nhan, va nha
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: hoc sach hoi tap, nghien cuu cong luc nganh hoa hoc ma hoa ((va nhan) OR (va phan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach hoi tap, nghien cuu cong luc nganh hoa hoc ma hoa ((va nhan) OR (va phan)) van".
• Adding a wildcard symbol may retrieve word variants: hoc sach hoi tap, nghien cuu cong luc nganh hoa hoc ma hoa ((va nhan) OR (va phan)) van*.