Perhaps you should try some spelling variations:
dung sai » dung tai, dung va, dung dat
cua tre » cua te, cuu tre, cua triet
xa dung » xay dung, xa dong, va dung
sach ty » sach y, sach thu, xach tay
hieu le » hieu ve, hieu he, hieu ly
nang ma » tang ma, sang ma, nang cao
sach tu » sach thu, cach tu, sach uu
ma hoi » mai hoi, xa hoi, ma hoa
le nam » ly nam, he nam, le na
thu xa » thu xac, thu ha, thu xe
cua tu » cua tuc, cua su, cua 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 ty) OR (sach tu)) nang ma hoi. hieu le nam thu xa dung sai ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang ma hoi. hieu le nam thu xa dung sai ((cua tre) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach tu)) nang ma hoi. hieu le nam thu xa dung sai ((cua tre) or (cua tu))*".