Perhaps you should try some spelling variations:
sang tai » hang tai, sang tao, tang tai
vu sach » vu bach, su sach, vu khach
va hanh » van hanh, va thanh, va danh
ky sang » ky nang, ky dang, ky tang
tai hai » thi hai, dai hai, tai ha
sach ky » sac ky, sach y, sach ty
vi cua » vai cua, di cua
va dan » ca dan, va dao, va dau
cua te » cua tu
ve cac » vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky sang tai hai. hieu ((ve cac) OR (va cac)) xuc ((va hanh) or (va dan)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky sang tai hai. hieu ((ve cac) OR (va cac)) xuc ((va hanh) OR (va dan)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky sang tai hai. hieu ((ve cac) OR (va cac)) xuc ((va hanh) or (va dan)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ky sang tai hai. hieu ((ve cac) OR (va cac)) xuc ((va hanh) or (va dan)) vi cua te*.