Perhaps you should try some spelling variations:
dinh cuu » dinh chi
te sach » toc sach
dinh cu » dinh chuc, dinh chau, dinh chi
xa hanh » xa thanh, xa khanh, va hanh
cao tuc » dao tuc, cao duc, cao suc
hieu va » lieu va, hieu qua
va cao » va cac, va co, va dao
x hoi » xa hoi, o hoi, x ho

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 ((tu nano) OR (truc nano)) x hoi. hieu va cao tuc xa hanh ((dinh cu) OR (dinh cuu)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu nano) OR (truc nano)) x hoi. hieu va cao tuc xa hanh ((dinh cu) OR (dinh cuu)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nano) OR (truc nano)) x hoi. hieu va cao tuc xa hanh ((dinh cu) OR (dinh cuu)) tre*.