Perhaps you should try some spelling variations:
dong khoan » dong khoa, dung khoa, dong hoa
khoan hoi » khoan nhoi, khoa hoi, khoa hoc
cham cuu » cap cuu, chat cua
ban tinh » ban thanh, quan tinh, ban hanh
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
tinh vi » trinh vi, tinh voi, tinh va
cuu ban » cuu van, cua ban, cuu san
hieu ve » hieu va, hieu van
y dong » ly dong, ty dong, _ dong
cua te » cua tu

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 y dong khoan hoi. ((hieu ve) or (lieu va)) cham cuu ban tinh vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y dong khoan hoi. ((hieu ve) OR (lieu va)) cham cuu ban tinh vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y dong khoan hoi. ((hieu ve) or (lieu va)) cham cuu ban tinh vi ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach y dong khoan hoi. ((hieu ve) or (lieu va)) cham cuu ban tinh vi ((cua tre) OR (cua te))*.