Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
lang van » dang van, tang van, hoang van
thanh ve » hanh ve, thanh va, thanh vien
cau tren » cu tren, dau tren, ca tren
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
mang xa » lang xa, mang may, dang xay
va pham » van pham, va phat, va phap
thi ban » thi lan, tai ban, tri ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((mang xa) or (lang van)) hoi. lieu va pham thi ban thanh ve ((cau tren) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((mang xa) OR (lang van)) hoi. lieu va pham thi ban thanh ve ((cau tren) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((mang xa) or (lang van)) hoi. lieu va pham thi ban thanh ve ((cau tren) or (cua viet))*.