Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
thu nhap » thu ha, khu nha
tu sach » thu sach, su sach, te sach
sai cua » dai cua, hai cua, lai cua
thu nam » tu nam, thu nhat, thu ngan
sach ly » sach y, sach lo, sach ty
hieu he » hieu ve, hiem he, hieu le
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
he nam » ha nam, nghe nam
ma hoi » xa hoi, ma hoa, me hoi

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