Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cua triet, dua tren
dinh te » kinh te, dich te, dinh ve
xa dinh » xac dinh, va dinh, ba dinh
cuu tre » cau tren, cau treo
sach tu » cach tu, sach ty, sach uu
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach tu) OR (sach thu)) lang xa hoi. hieu ve cam tuc xa dinh te ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach thu)) lang xa hoi. hieu ve cam tuc xa dinh te ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) OR (sach thu)) lang xa hoi. hieu ve cam tuc xa dinh te ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) OR (sach thu)) lang xa hoi. hieu ve cam tuc xa dinh te ((cua tre) or (cuu tre))*.