Perhaps you should try some spelling variations:
sang mai » sang ma, sang tai, lang mai
dan lai » dan loai, dan lap, dan lat
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
cam duc » cao duc, pham duc, nam duoc
ky sang » ky nang, ky dang, ky tang
te cac » tu cac, ve cac, te cao
cua te » cua tu
va dan » ca dan, va dao, va dau

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

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