Perhaps you should try some spelling variations:
bo sach » co sach, hoc sach
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa
le dat » de dat, le dac, ve dat
le dan » ke dan
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach y sang ma hoi. hieu ((le dat) or (le dan)) nuoc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y sang ma hoi. hieu ((le dat) OR (le dan)) nuoc va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: bo sach y sang ma hoi. hieu ((le dat) or (le dan)) nuoc va hanh vi cuu tre*.