Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
te sach » toc sach
xanh di » danh di, vanh dai, xanh tai
va xanh » va danh, va hanh, va anh
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua
ve cac » va 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 ty ((nang xa) or (lang xa)) hoi. hieu ((ve cac) OR (vien cac)) luc va xanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (lang xa)) hoi. hieu ((ve cac) OR (vien cac)) luc va xanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) or (lang xa)) hoi. hieu ((ve cac) OR (vien cac)) luc va xanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (lang xa)) hoi. hieu ((ve cac) OR (vien cac)) luc va xanh di cua tre*.