Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
va cam » va cham, va cac, va cao
do van » dao van, so van
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 ky dang xa hoi. lieu va cam ((do van) or (vo van)) ban ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky dang xa hoi. lieu va cam ((do van) OR (vo van)) ban ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky dang xa hoi. lieu va cam ((do van) or (vo van)) ban ((vi cua) or (di cua)) tre*.