Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
sach ly » sach y, sach lo, sach ty
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
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: te sach ly ((nang xa) OR (nang x)) hoi. hieu va cac duc va thanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly ((nang xa) OR (nang x)) hoi. hieu va cac duc va thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ly ((nang xa) OR (nang x)) hoi. hieu va cac duc va thanh dai cua tre*.