Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh dai » thanh tai, thanh dat, thanh oai
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
hang ca » nang cao, hang tai, hang dau
cua tuc » cua duc, cua tu, cua thuoc
xuc va » duc va, tuc va, luc va

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 y ((hang ca) or (hang va)) hoi. hieu van cac xuc va ((thanh dai) OR (thanh hai)) cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((hang ca) OR (hang va)) hoi. hieu van cac xuc va ((thanh dai) OR (thanh hai)) cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y ((hang ca) or (hang va)) hoi. hieu van cac xuc va ((thanh dai) OR (thanh hai)) cua tuc".
• Adding a wildcard symbol may retrieve word variants: toc sach y ((hang ca) or (hang va)) hoi. hieu van cac xuc va ((thanh dai) OR (thanh hai)) cua tuc*.