Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
day thanh » dao thanh, dat thanh, da thanh
toc sach » hoc sach, doc sach, nuoc sach
nang xa » nang x, lang xa, nang ma
thu day » thuc day, thu da, thu dac
loi cua » loai cua, doi cua, lai cua
hoi cua » hoi chuc
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (thuoc sach)) ky nang xa hoi. lieu va nam thu day thanh ((loi cua) OR (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuoc sach)) ky nang xa hoi. lieu va nam thu day thanh ((loi cua) OR (hoi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (thuoc sach)) ky nang xa hoi. lieu va nam thu day thanh ((loi cua) OR (hoi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuoc sach)) ky nang xa hoi. lieu va nam thu day thanh ((loi cua) OR (hoi cua)) tre*.