Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
dai cuu » dai cua, dai huu
va hanh » van hanh, va thanh, va danh
sach ky » sach y, sach ty, sach kem
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, ve cai

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 ky) or (sac ky)) nang ma hoi. hieu ((ve cam) or (va cam)) duc va hanh dai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang ma hoi. hieu ((ve cam) OR (va cam)) duc va hanh dai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang ma hoi. hieu ((ve cam) or (va cam)) duc va hanh dai cuu tre*.