Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ky thanh » ky hanh, ty thanh, y thanh
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
tai hoi » tai khoi, dai hoi, tai hai
cam luc » cau luc
hanh ve » hanh vi, hanh va, hanh kem
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky thanh tai hoi. lieu va ((cam luc) or (cam xuc)) van hanh ve cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky thanh tai hoi. lieu va ((cam luc) OR (cam xuc)) van hanh ve cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ky thanh tai hoi. lieu va ((cam luc) or (cam xuc)) van hanh ve cau tren*.