Perhaps you should try some spelling variations:
kho tang » cao tang
tieu su » thieu so
hieu ve » hieu va, hieu van
lai hoi » lai hoa, lai roi, mai hoi
va hanh » van hanh, va thanh, va danh
dai hoi » dai hoc, dai hai, dai moi
sac kho » suc khoe, cac khoi, dac khoa
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san
cua te » cua tu
xu va » xu van, tu va, su va

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 kho tang ((lai hoi) OR (dai hoi)). ((tieu su) or (hieu ve)) chao xu va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac kho tang ((lai hoi) OR (dai hoi)). ((tieu su) OR (hieu ve)) chao xu va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac kho tang ((lai hoi) OR (dai hoi)). ((tieu su) or (hieu ve)) chao xu va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac kho tang ((lai hoi) OR (dai hoi)). ((tieu su) or (hieu ve)) chao xu va hanh vi cua te*.