Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
dai cuu » dai cua, dai huu
sach tu » sach thu, cach tu, sach uu
hieu va » lieu va, hieu qua
sach ty » sach y, sach thu, xach tay
cuu tre » cua tre, cau tren, cau treo
nong x » nong xa, nang x, nong e
tuc va » thuc va, truc va, tuc xa
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) OR (sach ty)) nong x hoi. hieu va cac ((duc va) or (tuc va)) thanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach ty)) nong x hoi. hieu va cac ((duc va) OR (tuc va)) thanh dai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) OR (sach ty)) nong x hoi. hieu va cac ((duc va) or (tuc va)) thanh dai cuu tre*".