Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh san
thien van » thi van
thanh hoa » thanh pho
toc sach » hoc sach, doc sach, thuoc sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
nam tuc » nam thuc, nam truc, nam tu
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: toc sach ky dang xa hoi. ((lieu va) or (thien van)) nam tuc xa ((thanh hai) OR (thanh hoa)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky dang xa hoi. ((lieu va) OR (thien van)) nam tuc xa ((thanh hai) OR (thanh hoa)) cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky dang xa hoi. ((lieu va) or (thien van)) nam tuc xa ((thanh hai) OR (thanh hoa)) cua tu*".