Perhaps you should try some spelling variations:
tang mai » tang ma, tang tai, lang mai
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
di cua » dai cua, doi cua, de cua
cua te » cua tu
ve cac » vien cac
sach 7 » sach y, sach 2
ve cai » va cai, ve tai, ve cau
7 tang » 6 tang

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 7 tang mai hoi. hieu ((ve cai) or (((ve cac) or (va cac)))) truc va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach 7 tang mai hoi. hieu ((ve cai) OR (((ve cac) OR (va cac)))) truc va hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: su sach 7 tang mai hoi. hieu ((ve cai) or (((ve cac) or (va cac)))) truc va hanh di cua te*.