Perhaps you should try some spelling variations:
sang mai » sang ma, sang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
hai cua » thai cua, dai cua, hoi cua
cam duc » cao duc, pham duc, nam duoc
ky sang » ky nang, ky dang, ky tang
te cao » te bao
va dao » ca dao
cua te » cua tu
va dan » ca dan, va dau, va dap

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cao ky sang mai hoi. hieu ve ((cam duc) or (cam xuc)) ((va dan) OR (va dao)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cao ky sang mai hoi. hieu ve ((cam duc) OR (cam xuc)) ((va dan) OR (va dao)) hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cao ky sang mai hoi. hieu ve ((cam duc) or (cam xuc)) ((va dan) OR (va dao)) hai cua te".
• Adding a wildcard symbol may retrieve word variants: te cao ky sang mai hoi. hieu ve ((cam duc) or (cam xuc)) ((va dan) OR (va dao)) hai cua te*.