Perhaps you should try some spelling variations:
chat trong » nhat trong, thuat trong, chat luong
thu sach » tu sach, thuat sach, thuoc sach
hieu cao » chieu cao, hieu cac, hieu ca
trong va » trong van, trong ca, trong cac
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
dan dai » can dai, dan dat, dan da
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((nang xa) or (nang x)) hoi. hieu cao chat trong va ((dan dai) OR (dat dai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang x)) hoi. hieu cao chat trong va ((dan dai) OR (dat dai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((nang xa) or (nang x)) hoi. hieu cao chat trong va ((dan dai) OR (dat dai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (nang x)) hoi. hieu cao chat trong va ((dan dai) OR (dat dai)) cua tre*.