Perhaps you should try some spelling variations:
manh hai » lanh hai, minh hai, thanh hai
sach ky » sach y, sach ty, sach kem
hai cua » thai cua, dai cua, hoi cua
xa manh » ha manh, van manh, day manh
hieu he » hieu ve, hiem he, hieu le
tang ma » tang van
cua tre » cua te, cuu tre, cua triet
he nam » ha nam, nghe nam
thu xa » thu xac, thu ha, thu xe
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) OR (sac ky)) ((tang ma) OR (mang may)) hoi. hieu he nam thu xa manh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) ((tang ma) OR (mang may)) hoi. hieu he nam thu xa manh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sac ky)) ((tang ma) OR (mang may)) hoi. hieu he nam thu xa manh hai cua tre*.