Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
luy tre » luyen tre
cao hoi » cau hoi, co hoi, tao hoi
luu tre » luu tru, cuu tre
cao hoc » co hoc, cho hoc, chat hoc
hieu ve » hieu va, hieu van
te sac » te sach, te cac, te san
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
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: te sac ky nang ((cao hoi) OR (cao hoc)). hieu ve cam xuc va thanh vi ((luu tre) or (luy tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ((cao hoi) OR (cao hoc)). hieu ve cam xuc va thanh vi ((luu tre) OR (luy tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang ((cao hoi) OR (cao hoc)). hieu ve cam xuc va thanh vi ((luu tre) or (luy tre))".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang ((cao hoi) OR (cao hoc)). hieu ve cam xuc va thanh vi ((luu tre) or (luy tre))*.