Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
khanh vi » hanh vi, khanh v, nhanh vi
xa khanh » xa thanh, van khanh, dat khanh
sach tu » sach thu, cach tu, sach uu
sach ty » sach y, sach thu, xach tay
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam
anh xa » anh xay, canh xa, anh va
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) anh xa hoi. hieu ((ve cam) OR (vien cac)) tuc xa khanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach tu)) anh xa hoi. hieu ((ve cam) or (vien cac)) tuc xa khanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach tu)) anh xa hoi. hieu ((ve cam) or (vien cac)) tuc xa khanh vi cua te*.