Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
xuc van » duc van, luc van, vuc van
ve cam » ve cham, ve cai, ve cau
va cam » va cham, va cac, va cao
ve cac » va cac, vien cac
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang co hoc. hieu ((((ve cam) or (va cam))) or (ve cac)) xuc van hanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang co hoc. hieu ((((ve cam) OR (va cam))) OR (ve cac)) xuc van hanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang co hoc. hieu ((((ve cam) or (va cam))) or (ve cac)) xuc van hanh vi cau tren*.