Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh hai » thanh phan, thanh hoa, thanh san
vu sach » vu bach, su sach, vu khach
xuc van » duc van, luc van, vuc van
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
sach lo » sach dao, sach doi, sach hoi
dai hai » dai hoi, dai tai, dai thao
lo nang » ho nang, ly nang, loai nang
ve cam » ve cham, ve cac, va cam
cua te » cua tu

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 lo nang ((dai hai) OR (dai han)). hieu ve cam xuc van thanh hai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach lo nang ((dai hai) OR (dai han)). hieu ve cam xuc van thanh hai ((cuu tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach lo nang ((dai hai) OR (dai han)). hieu ve cam xuc van thanh hai ((cuu tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: vu sach lo nang ((dai hai) OR (dai han)). hieu ve cam xuc van thanh hai ((cuu tre) or (cua te))*.