Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
va doanh » van doanh, va danh, hoa doanh
thu sac » thu sach, thu san, thu xac
cac xuc » cam xuc, cac nuoc, chat xuc
su viet » so viet
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky ((nang xa) or (nang cao)) hoi. hieu ve cac xuc ((va doanh) or (vay doanh)) va su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((nang xa) OR (nang cao)) hoi. hieu ve cac xuc ((va doanh) OR (vay doanh)) va su viet.
• Adding a wildcard symbol may retrieve word variants: thu sac ky ((nang xa) or (nang cao)) hoi. hieu ve cac xuc ((va doanh) or (vay doanh)) va su viet*.