Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
sach kem » hanh kem
va thanh » gia thanh, ban thanh, va tinh
nang ma » tang ma, sang ma, nang cao
duoc va » nuoc va, duc va, duoc ma
cua tre » cua te, cuu tre, cua triet
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: tu ((sach kem) or (sac ky)) nang ma hoa. thien ((van lam) OR (van nam)) duoc va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach kem) OR (sac ky)) nang ma hoa. thien ((van lam) OR (van nam)) duoc va thanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach kem) or (sac ky)) nang ma hoa. thien ((van lam) OR (van nam)) duoc va thanh dai cua tre*".