Perhaps you should try some spelling variations:
thuc xay » thuc day, tuc xay, thuat xay
san cuu » san cua, san huu, song cuu
thu xay » thau xay, tu xay, thu xac
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach uu
cuu tre » cua tre, cau tren, cau treo
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach tu)) nang xa hoi. hieu ve nam ((thu xay) OR (thuc xay)) thanh san cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang xa hoi. hieu ve nam ((thu xay) OR (thuc xay)) thanh san cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach tu)) nang xa hoi. hieu ve nam ((thu xay) OR (thuc xay)) thanh san cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) nang xa hoi. hieu ve nam ((thu xay) OR (thuc xay)) thanh san cuu tre*.