Perhaps you should try some spelling variations:
thuat cach » thuat sach, thuat canh, thuat mach
danh nhan » doanh nhan, thanh nhan, benh nhan
cach hoc » cach thuc, cach thoi, dich hoc
hoc toan » hoc tan, hop toan, hoa toan
van nhan » van phan, van thanh, van khanh
cuu hoa » cuu khoa, cuu hoan, cau hoa
hoc xa » hoc ma

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat cach hoc tap, nghien cuu hoa hoc toan khoa hoc xa hoi ((van nhan) OR (danh nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat cach hoc tap, nghien cuu hoa hoc toan khoa hoc xa hoi ((van nhan) OR (danh nhan)) van".
• Adding a wildcard symbol may retrieve word variants: thuat cach hoc tap, nghien cuu hoa hoc toan khoa hoc xa hoi ((van nhan) OR (danh nhan)) van*.