Perhaps you should try some spelling variations:
thanh ha » thanh hoa, thanh hai, nhanh ha
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
luc va » duc va, tuc va
ve cac » va cac, vien cac
loc va » hoc va

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

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