Perhaps you should try some spelling variations:
sach ty » sach tu, sach thu, xach tay
hai cua » thai cua, dai cua, hoi cua
anh hai » lanh hai, manh hai, anh thai
cac ban » cac dan, cac van, can ban
cuc ban » cua ban, cuu ban, duc ban
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
va cam » va cham, va cac, va cao
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: thu ((sach ty) or (sach y)) nang xa hoi. hieu va cam ((cuc ban) OR (cac ban)) anh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach y)) nang xa hoi. hieu va cam ((cuc ban) OR (cac ban)) anh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ty) or (sach y)) nang xa hoi. hieu va cam ((cuc ban) OR (cac ban)) anh hai cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) or (sach y)) nang xa hoi. hieu va cam ((cuc ban) OR (cac ban)) anh hai cua te*.