Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
nang cau » nang cao, hang cau, nang dau
thanh vi » hanh vi, thanh va, thanh ve
luy tre » luyen tre
luu tre » luu tru, cuu tre
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, va cam, ve cai
te sac » te sach, te cac, te san

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 cau hoi. hieu ((ve cam) or (ve cac)) tuc 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 cau hoi. hieu ((ve cam) OR (ve cac)) tuc va thanh vi ((luu tre) OR (luy tre)).
• Adding a wildcard symbol may retrieve word variants: te sac ky nang cau hoi. hieu ((ve cam) or (ve cac)) tuc va thanh vi ((luu tre) or (luy tre))*.