Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
thu cach » thuc cach, thu canh, tu cach
van chat » cao chat
va thanh » gia thanh, ban thanh, va tinh
nang mai » nang tai, lang mai, nang cai
nang ma » tang ma, sang ma, nang cao
cach tu » cach thuc
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu cach tu ((nang mai) or (nang ma)) hoi. hieu ((va cham) or (van chat)) duc va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cach tu ((nang mai) OR (nang ma)) hoi. hieu ((va cham) OR (van chat)) duc va thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu cach tu ((nang mai) or (nang ma)) hoi. hieu ((va cham) or (van chat)) duc va thanh dai cua tre*.