Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
so sach » so sanh, co sach, hoc sach
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
ve chao » ve chat, ve cham, ve cho
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, cua triet
bo sach » co sach, hoc sach
o lang » hoa lang, hoi lang
y lang » _ lang, tay lang, yen lang
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) OR (bo sach)) ((y lang) or (o lang)) van hoi. hieu ve chao xu va hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ((y lang) OR (o lang)) van 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) OR (bo sach)) ((y lang) or (o lang)) van hoi. hieu ve chao xu va hanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ((y lang) or (o lang)) van hoi. hieu ve chao xu va hanh hai cua tre*.