Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
luu tre » luu tru, cuu tre
luy tre » luyen tre
te sac » te sach, te cac, te san
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 cau hoi. hieu ve cam duc 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 duc 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 duc va thanh vi ((luu tre) or (luy tre))*.