Perhaps you should try some spelling variations:
xay thanh » day thanh, giay thanh, ngay thanh
nam thuc » nam thuoc, am thuc, nam thu
thuc xay » thuc day, tuc xay, thuat xay
tu sach » thu sach, su sach, tu cach
te sach » toc sach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cu tren » tu tren, dua tren
ve nam » he nam, va nam, le nam
san cu » san cua, san co, dan cu

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) OR (te sach)) ty nang xa hoi. hieu ve nam thuc xay thanh san cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty nang xa hoi. hieu ve nam thuc xay thanh san cu tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty nang xa hoi. hieu ve nam thuc xay thanh san cu tren*.