Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
cua duc » cua tuc, cua nuoc, cua quoc
ve bao » va bao
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 ky dang xa hoi. hieu ((ve bao) or (te bao)) duc va thanh va ((cua te) or (cua duc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky dang xa hoi. hieu ((ve bao) OR (te bao)) duc va thanh va ((cua te) OR (cua duc)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky dang xa hoi. hieu ((ve bao) or (te bao)) duc va thanh va ((cua te) or (cua duc))*.