Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
tai cuu » tai cuc, tai buu, tai cua
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cua tre, cau tren, cau treo
hanh xa » hanh va, hanh ma, hanh xu
tu hanh » du hanh, lu hanh, thuc hanh
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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) OR (doc sach)) tu hanh xa hoi. hieu ((ve cam) or (ve cac)) xuc ban thanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) tu hanh xa hoi. hieu ((ve cam) OR (ve cac)) xuc ban thanh tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) tu hanh xa hoi. hieu ((ve cam) or (ve cac)) xuc ban thanh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) tu hanh xa hoi. hieu ((ve cam) or (ve cac)) xuc ban thanh tai cuu tre*.