Perhaps you should try some spelling variations:
danh lai » danh sai, gianh lai, dinh lam
sang mai » sang ma, sang tai, lang mai
cua tre » cua te, cuu tre, cua triet
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
nha hoc » nha thuoc, khoa hoc, nha nuoc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
sac ky » cac ky

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