Perhaps you should try some spelling variations:
danh lai » danh sai, gianh lai, dinh lam
sang mai » sang tai, lang mai, hoang mai
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
sach ky » sach y, sach ty, sach kem
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai 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 ((sach ky) or (sac ky)) ((sang mai) OR (sang ma)) hoi. hieu ve cam duc va danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) ((sang mai) OR (sang ma)) hoi. hieu ve cam duc va danh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sac ky)) ((sang mai) OR (sang ma)) hoi. hieu ve cam duc va danh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sac ky)) ((sang mai) OR (sang ma)) hoi. hieu ve cam duc va danh lai cua tre*.