Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
cac toc » cac toi, cac nuoc, cac thoi
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
lang ha » long ha
lang xa » dang xay, lang van
ve cac » va cac, vien cac
toc va » hoc va, toc ta, tuc va
di cua » dai cua, doi 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 ky ((((lang xa) or (nang cao))) or (lang ha)) hoi. hieu ve cac toc va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((((lang xa) OR (nang cao))) OR (lang ha)) hoi. hieu ve cac toc va hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((((lang xa) or (nang cao))) or (lang ha)) hoi. hieu ve cac toc va hanh di cua tre*.