Perhaps you should try some spelling variations:
sach thien » sach thieu, sach tien, cach thien
thien dang » thien bang, thien danh, thien nang
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
dang xa » dang xay, lang xa, dang ha
di cua » dai cua, doi cua, de cua
ve cac » va cac, vien cac

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 thien dang xa hoi. hieu ((ve cham) or (ve cac)) xuc ((va danh) or (van hanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thien dang xa hoi. hieu ((ve cham) OR (ve cac)) xuc ((va danh) OR (van hanh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach thien dang xa hoi. hieu ((ve cham) or (ve cac)) xuc ((va danh) or (van hanh)) di cua tre*.