Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hang cau » hang dau, hang ca, nhung cau
thanh vi » hanh vi, thanh va, thanh ve
hieu ve » hieu va, hieu van
xuc ban » duc ban, cuc ban, quoc ban
luu tre » luu tru, cuu tre
luy tre » luyen tre
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: tu cac ky ((hang cau) or (nang cao)) hoi. hieu ve cam xuc ban thanh vi ((luu tre) or (luy tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky ((hang cau) OR (nang cao)) hoi. hieu ve cam xuc ban thanh vi ((luu tre) OR (luy tre)).
• Adding a wildcard symbol may retrieve word variants: tu cac ky ((hang cau) or (nang cao)) hoi. hieu ve cam xuc ban thanh vi ((luu tre) or (luy tre))*.