Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
thuc va » thuc dan, thuc day
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
ve nam » he nam, va nam, le nam
ma hoi » xa hoi, ma hoa, me hoi
vi cua » vai cua, di cua
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: vu sach y nang ((ma hoi) or (mai hoi)). hieu ve nam ((thuc va) or (thuc vat)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang ((ma hoi) OR (mai hoi)). hieu ve nam ((thuc va) OR (thuc vat)) hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang ((ma hoi) or (mai hoi)). hieu ve nam ((thuc va) or (thuc vat)) hanh vi cua te*.