Perhaps you should try some spelling variations:
thanh ha » thanh hoa, thanh hai, nhanh ha
tang van » hoang van, trong van, tang luan
dang van » hoang van, hang va
thanh va » thanh van, hanh va, thanh ve
te sach » toc sach
nam xuc » cam xuc, nam xua, nam thuc
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
xuc va » duc va, tuc va, luc va
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((tang van) or (dang van)) hoe. hieu va nam xuc va ((thanh va) or (thanh ha)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((tang van) OR (dang van)) hoe. hieu va nam xuc va ((thanh va) OR (thanh ha)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((tang van) or (dang van)) hoe. hieu va nam xuc va ((thanh va) or (thanh ha)) cuu tre*.