Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
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: tu sach ky ((nang x) or (lang xa)) hoi. hieu ve cam xuc va doanh van ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang x) OR (lang xa)) hoi. hieu ve cam xuc va doanh van ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang x) or (lang xa)) hoi. hieu ve cam xuc va doanh van ((cua tre) or (cua te))*.