Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
ban hang » ngan hang
van hang » van khang, van hoang, van thang
tu sach » su sach, te sach, tu cach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
huu tre » huu tri, cuu tre, huu them
ve cam » ve cham, ve cac, va cam
va huu » vu huu

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) or (thu sach)) ky lang xa hoi. hieu ve cam xuc ((ban hang) or (van hang)) va huu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky lang xa hoi. hieu ve cam xuc ((ban hang) OR (van hang)) va huu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky lang xa hoi. hieu ve cam xuc ((ban hang) or (van hang)) va huu tre*.