Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
dat duoc » dat nuoc, da duoc, luat duoc
cua tre » cua te, cuu tre, cua triet
ky lang » ky dang, ky tang, tay lang
lai cua » dai cua, hai cua, lai chau
hieu ve » hieu va, hieu van
dan lai » dan loai, dan lap, dan lat
va dan » ca dan, va dao, va dau
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ((ky lang) or (ky nang)) mai khoi. hieu ve ((dat duoc) or (cam xuc)) va dan lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky lang) OR (ky nang)) mai khoi. hieu ve ((dat duoc) OR (cam xuc)) va dan lai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sac ((ky lang) or (ky nang)) mai khoi. hieu ve ((dat duoc) or (cam xuc)) va dan lai cua tre*.