Perhaps you should try some spelling variations:
te sach » toc sach
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cao tuc » dao tuc, cao duc, cao suc
hieu va » hieu qua
tu nano » truc nano
tu nang » tru nang, tu nong, tu lang
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
vi cuu » vi luu, vinh cuu
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 nang) or (tu nano)) x hoi. ((hieu va) or (lieu va)) cao tuc va danh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (tu nano)) x hoi. ((hieu va) OR (lieu va)) cao tuc va danh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) or (tu nano)) x hoi. ((hieu va) or (lieu va)) cao tuc va danh vi cuu tre*.