Perhaps you should try some spelling variations:
vat doanh » van doanh, vay doanh, va doanh
chat thuc » thuat thuc, nhan thuc, chat thai
doanh thu » doanh tai
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
thu cua » thuc cua, hu cua, tu cua
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: thu ((sach ky) or (sac ky)) nang xa hoi. hieu va chat thuc vat doanh thu cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) nang xa hoi. hieu va chat thuc vat doanh thu cua tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sac ky)) nang xa hoi. hieu va chat thuc vat doanh thu cua tre*.