Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau treo
va bac » van bac, va cac, va bai
bo van » vo van, so van, do van
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 ty nang x hoi. hieu va bac bo van thanh vi ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu va bac bo van thanh vi ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu va bac bo van thanh vi ((cuu tre) OR (cau tren))*.