Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
hieu so » thieu so
chao tu » chao xu, cho tu, chai tu
ky sang » ky nang, ky dang, ky tang
mai hoi » mai khoi, dai hoi, lai hoi
vi cua » vai cua, di cua
cao tu » cao thu, co tu, cao su
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » xa hoi, ma hoa, me hoi
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky sang ((ma hoi) or (mai hoi)). hieu so ((chao tu) OR (cao tu)) va thanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang ((ma hoi) OR (mai hoi)). hieu so ((chao tu) OR (cao tu)) va thanh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky sang ((ma hoi) or (mai hoi)). hieu so ((chao tu) OR (cao tu)) va thanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang ((ma hoi) or (mai hoi)). hieu so ((chao tu) OR (cao tu)) va thanh vi cua tu*.