Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
toc sach » hoc sach, doc sach, thuoc sach
nay qua » cay qua, nam qua, nay lua
cuu tre » cau tren, cau treo
qua ban » cua ban, qua quan
cua tre » cua te, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, me hoi
va nay » va ngay, va cay

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang ((ma hoi) or (ma hoa)). lieu va nay qua ban thanh vai ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ((ma hoi) OR (ma hoa)). lieu va nay qua ban thanh vai ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ((ma hoi) or (ma hoa)). lieu va nay qua ban thanh vai ((cuu tre) or (cua tre))*.