Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
danh tu » anh tu, doanh thu
thuc va » thuc dan, thuc day
va pham » van pham, va phat, va phap
hieu va » lieu va, hieu qua
ty nang » ty xang, ty hang, ly nang
ma hoi » mai hoi, xa hoi, ma hoa
tu cua » hu cua, vu cua
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: vu sach ((ty nang) OR (ky nang)) ma hoi. hieu va pham ((thuc va) OR (thuc vat)) danh tu cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ty nang) or (ky nang)) ma hoi. hieu va pham ((thuc va) OR (thuc vat)) danh tu cua te~".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty nang) or (ky nang)) ma hoi. hieu va pham ((thuc va) OR (thuc vat)) danh tu cua te*.