Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach thu » sach thue, sach thieu, sach tham
vu sach » vu bach, su sach, vu khach
tuc van » thuc van, truc van, tuc va
dau tuc » dau tu, dao tuc, cau truc
hang ca » hang va, nang cao, hang tai
hang xa » hoang xa, hang va, lang xa
di cuu » di cua, dinh cuu
di cau » da cau, diem cau
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach thu ((hang xa) OR (hang ca)) hoi. lieu va dau tuc van thanh ((di cuu) or (di cau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach thu ((hang xa) OR (hang ca)) hoi. lieu va dau tuc van thanh ((di cuu) OR (di cau)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach thu ((hang xa) OR (hang ca)) hoi. lieu va dau tuc van thanh ((di cuu) or (di cau)) tre*".