Perhaps you should try some spelling variations:
lang hai » lang chai, lang thai, hang hai
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
tai cuu » tai cuc, tai buu, tai cua
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
lang ha » long ha
va cao » va cac, va co, va dao
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((lang hai) OR (lang ha)) hoi. hieu ((ve cam) or (va cao)) luc va hanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((lang hai) OR (lang ha)) hoi. hieu ((ve cam) OR (va cao)) luc va hanh tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((lang hai) OR (lang ha)) hoi. hieu ((ve cam) or (va cao)) luc va hanh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((lang hai) OR (lang ha)) hoi. hieu ((ve cam) or (va cao)) luc va hanh tai cuu tre*.