Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
hanh vai » hanh vi, hanh va, hanh tai
cuu tre » cua tre, cau tren, cau treo
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ve cam » ve cham, va cam, ve cai
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va 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 sai ky sang ma hoi. hieu ((ve cam) or (((ve cac) OR (vien cac)))) xuc va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky sang ma hoi. hieu ((ve cam) OR (((ve cac) OR (vien cac)))) xuc va hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky sang ma hoi. hieu ((ve cam) or (((ve cac) OR (vien cac)))) xuc va hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sai ky sang ma hoi. hieu ((ve cam) or (((ve cac) OR (vien cac)))) xuc va hanh vai cuu tre*.