Perhaps you should try some spelling variations:
sach vaya » sach va, sach hay, sach nay
sach vay » sach va, sach hay, sach nay
va hanh » van hanh, va thanh, va danh
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, tuc va, luc va
vi cua » vai cua, di 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 vay) or (sach vaya)) ((lang xa) OR (lang ha)) hoi. hieu ve cam xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach vay) OR (sach vaya)) ((lang xa) OR (lang ha)) hoi. hieu ve cam xuc va hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach vay) or (sach vaya)) ((lang xa) OR (lang ha)) hoi. hieu ve cam xuc va hanh vi cua tre*".