Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
xa thanh » va thanh, ha thanh, ta thanh
lang van » dang van, tang van, hoang van
su sach » so sach, vu sach
hai cua » thai cua, dai cua, hoi cua
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu

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 ty ((lang xa) OR (lang van)) hoi. hieu ((ve cam) or (ve cac)) tuc xa thanh hai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((lang xa) OR (lang van)) hoi. hieu ((ve cam) OR (ve cac)) tuc xa thanh hai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((lang xa) OR (lang van)) hoi. hieu ((ve cam) or (ve cac)) tuc xa thanh hai cua tu".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((lang xa) OR (lang van)) hoi. hieu ((ve cam) or (ve cac)) tuc xa thanh hai cua tu*.