Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
pham thuc » phap thuc, pham chuc, nham thuc
xa trong » xa truong, ca trong, va trong
trong xa » trong xay, trong ca, trong xu
thuc dan » thuc hanh, hoc dan, thuc vat
dang van » hoang van, hang va
su sach » so sach, vu sach
sach xa » sach dao, sach nha, sach bai
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
cuu tre » cua tre, cau tren, cau treo

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 xa trong xa hoi. hieu ve pham thuc dan ((dang van) or (doanh van)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach xa trong xa hoi. hieu ve pham thuc dan ((dang van) OR (doanh van)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach xa trong xa hoi. hieu ve pham thuc dan ((dang van) or (doanh van)) cuu tre*.