Perhaps you should try some spelling variations:
sach ky » sach y, sach ty, sach kem
nang ma » tang ma, sang ma, nang cao
cam tuc » cam xuc, cam tu, nam thuc
xa dung » xay dung, xa dong, va dung
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ky) or (sac ky)) ((nang x) or (nang ma)) hoi. lieu va cam tuc xa dung tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sac ky)) ((nang x) OR (nang ma)) hoi. lieu va cam tuc xa dung tai cua tre.
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) or (sac ky)) ((nang x) or (nang ma)) hoi. lieu va cam tuc xa dung tai cua tre*.