Perhaps you should try some spelling variations:
khoe sinh » cho sinh, hoa sinh, hoc sinh
khoa sinh » hoa sinh, khoa hinh, khoa tinh
hong minh » hoang minh, thong minh, khong minh
hoach ha » hoach va, hoach xay, hoach hoi
gioi can » gioi van, gioi cam, gioi han
can hong » chan hong, can dong, can song
gioi cau » gioi chau, gioi cam, gioi tu
tu sach » thu sach, su sach, te sach
sach bo » sach bao, sach lo, sach dao
me gioi » me giai, ve gioi, me nguoi
ha me » cha me, ba me, ha le
bo me » bo de, ba me, bo ke

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach bo me gioi can hong minh ) or ( thu hoach ha me gioi cau ((khoa sinh) OR (khoe sinh)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach bo me gioi can hong minh ) OR ( thu hoach ha me gioi cau ((khoa sinh) OR (khoe sinh)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach bo me gioi can hong minh ) or ( thu hoach ha me gioi cau ((khoa sinh) OR (khoe sinh)) ))".
• Adding a wildcard symbol may retrieve word variants: (( tu sach bo me gioi can hong minh ) or ( thu hoach ha me gioi cau ((khoa sinh) OR (khoe sinh)) ))*.