Perhaps you should try some spelling variations:
te sach » toc sach
dinh te » kinh te, dich te, dinh ve
sach tu » sach thu, cach tu, sach ty
hieu ve » hieu va, hieu van
lang ha » long ha
lang xa » dang xay, lang van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
te cua » tue cua, le cua, de cua

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