Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
su sach » so sach
vai cua » dai cua, hai cua, lai cua
cac loc » cac lop, cac toc, cac hoc
van cac » van hac, van cau, van bac
cua tre » cua te, cuu tre, cua triet
lang ha » long ha
lang xa » dang xay, lang van
vu sach » vu bach, vu khach
loc va » hoc 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: ((su sach) OR (vu sach)) ky ((lang xa) or (lang ha)) hoi. hieu van cac loc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky ((lang xa) OR (lang ha)) hoi. hieu van cac loc va thanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ky ((lang xa) or (lang ha)) hoi. hieu van cac loc va thanh vai cua tre*".