Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
dang xay » dang van, van xay
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
cao duc » dao duc, cao suc, giao duc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
dang xa » lang xa, dang ha, dang va
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((dang xa) OR (dang xay)) hoi. hieu va cao duc va danh ((dai cua) or (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((dang xa) OR (dang xay)) hoi. hieu va cao duc va danh ((dai cua) OR (thai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((dang xa) OR (dang xay)) hoi. hieu va cao duc va danh ((dai cua) or (thai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((dang xa) OR (dang xay)) hoi. hieu va cao duc va danh ((dai cua) or (thai cua)) tre*.