Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ve chao » ve chat, ve cham, ve cho
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y lang » o lang, tay lang, yen lang
_ lang » o lang, _ land
xu va » xu van, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((y lang) OR (_ lang)) xa hoi. hieu ve chao xu va hanh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y lang) OR (_ lang)) xa hoi. hieu ve chao xu va hanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ((y lang) OR (_ lang)) xa hoi. hieu ve chao xu va hanh hai cua tre*.