Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
hieu va » lieu va, hieu qua
te sach » toc sach
nang xa » lang xa, nang ma, mang xa
dam tu » cam tu, tam tu, dam thuc
nam tu » nam thu, nam thuc
di cau » da cau, diem cau

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 y ((nang xa) or (nang x)) hoi. hieu va ((dam tu) or (nam tu)) va thanh di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (nang x)) hoi. hieu va ((dam tu) OR (nam tu)) va thanh di cau tren.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) or (nang x)) hoi. hieu va ((dam tu) or (nam tu)) va thanh di cau tren*.