Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, cau treo
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
tu ngan » vu ngan, tu ngay, te ngan
hang vi » hanh vi, hang di, khang voi
ca tren » cu tren, la tren, co tren
ve cac » va cac, vien cac
cac tu » cac thu, cach tu, cac du

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty xang xa hoi. hieu ve cac tu ngan ((hang vi) or (hang va)) ((ca tren) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. hieu ve cac tu ngan ((hang vi) OR (hang va)) ((ca tren) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. hieu ve cac tu ngan ((hang vi) or (hang va)) ((ca tren) or (cau tren))*.