Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
tu sach » thu sach, su sach, te sach
sai cua » dai cua, hai cua, lai cua
xa danh » va danh, dia danh, nam danh
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
thu xa » thu xac, thu ha, thu xe
ma hoi » xa hoi, ma hoa, me hoi
le tam » le tai, le ham, le nam
le ta » le tai, le va

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 (mai hoi)). hieu ((le tam) or (le ta)) thu xa danh sai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((ma hoi) OR (mai hoi)). hieu ((le tam) OR (le ta)) thu xa danh sai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((ma hoi) OR (mai hoi)). hieu ((le tam) or (le ta)) thu xa danh sai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((ma hoi) OR (mai hoi)). hieu ((le tam) or (le ta)) thu xa danh sai cua tre*.