Perhaps you should try some spelling variations:
su sach » so sach, vu sach
hanh de » hanh ve, hanh kem
xa hanh » xa thanh, xa khanh, va hanh
ve cac » va cac, vien cac
de cua » le cua, te cua, dieu cua
ve cam » ve cham, va cam, ve cai
sach 6 » sach y, sach 2
me hoi » le hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach 6 tang ((me hoi) or (ma hoa)). hieu ((ve cam) or (ve cac)) tuc xa hanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach 6 tang ((me hoi) OR (ma hoa)). hieu ((ve cam) OR (ve cac)) tuc xa hanh de cua te.
• Adding a wildcard symbol may retrieve word variants: su sach 6 tang ((me hoi) or (ma hoa)). hieu ((ve cam) or (ve cac)) tuc xa hanh de cua te*.