Perhaps you should try some spelling variations:
dong minh » duong minh, dong kinh, dong ninh
khoa sinh » hoa sinh, khoe sinh, khoa hinh
sach bao » sach dao, sach bai, sach bac
gioi can » gioi van, gioi cam, gioi han
can dong » van dong, dan dong, cao dong
gioi cau » gioi chau, gioi cam, gioi tu
cau khoa » cuu khoa, cu khoa, cau hoa
te sach » toc sach
me gioi » me giai, ve gioi, me nguoi
bao me » bao ve, bo me, nao me
ha me » cha me, ha le, ca me

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach bao me gioi can dong minh ) or ( thu hoach ((ha me) or (ba me)) gioi cau khoa sinh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach bao me gioi can dong minh ) OR ( thu hoach ((ha me) OR (ba me)) gioi cau khoa sinh )).
• Adding a wildcard symbol may retrieve word variants: (( te sach bao me gioi can dong minh ) or ( thu hoach ((ha me) or (ba me)) gioi cau khoa sinh ))*.