Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
sach ky » sac ky, sach ty, sach kem
luu tre » luu tru, cuu tre
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
luy tre » luyen tre
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va
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: te ((sach ky) or (sach y)) nang cau hoi. hieu ve cac xuc va hanh vi ((luu tre) OR (luy tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang cau hoi. hieu ve cac xuc va hanh vi ((luu tre) OR (luy tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) nang cau hoi. hieu ve cac xuc va hanh vi ((luu tre) OR (luy tre))*".