Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
thuc xay » thuc day, tuc xay, thuat xay
sach ky » sac ky, sach y, sach ty
lai cua » dai cua, hai cua, lai chau
thuc xa » tuc xa, thuc va, thuc ha
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay
ma hoi » mai hoi, ma hoa, me hoi
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: tu sach ky nang ((ma hoi) or (xa hoi)). hieu va nam ((thuc xa) OR (thuc xay)) thanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((ma hoi) OR (xa hoi)). hieu va nam ((thuc xa) OR (thuc xay)) thanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((ma hoi) or (xa hoi)). hieu va nam ((thuc xa) OR (thuc xay)) thanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((ma hoi) or (xa hoi)). hieu va nam ((thuc xa) OR (thuc xay)) thanh lai cua te*.