Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
sach thu » sach thue, sach thieu, sach tham
danh vai » danh sai, danh va, dang van
cuu tre » cua tre, cau tren, cau treo
cam duc » cam xuc, cao duc, pham duc
sach tu » cach tu, sach ty, sach uu
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach tu) or (sach thu)) tang xa hoi. hieu ve cam duc va ((danh vai) or (doanh van)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach tu) OR (sach thu)) tang xa hoi. hieu ve cam duc va ((danh vai) OR (doanh van)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach tu) or (sach thu)) tang xa hoi. hieu ve cam duc va ((danh vai) or (doanh van)) cuu tre*.