Perhaps you should try some spelling variations:
gian thanh » gia thanh, ban thanh, van thanh
thanh vai » thanh hai, thanh van, thanh tai
thien van » thi van
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, cua triet
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
ty lang » tay lang, ty hang, tu lang

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 ((ty lang) or (ty xang)) ((mai hoi) OR (dai hoi)). thien van cac dan gian thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (ty xang)) ((mai hoi) OR (dai hoi)). thien van cac dan gian thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty lang) or (ty xang)) ((mai hoi) OR (dai hoi)). thien van cac dan gian thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (ty xang)) ((mai hoi) OR (dai hoi)). thien van cac dan gian thanh vai cua tre*.