Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
nang ma » tang ma, sang ma, mang may
hieu va » lieu va, hieu qua
dau luc » cau luc, dau luan, dau nuoc
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va dau » va dao
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach tham) or (sach nha)) ((nang ma) or (nang cao)) hoi. hieu va dau luc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach tham) OR (sach nha)) ((nang ma) OR (nang cao)) hoi. hieu va dau luc va thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc ((sach tham) or (sach nha)) ((nang ma) or (nang cao)) hoi. hieu va dau luc va thanh vai cua tre*.