Perhaps you should try some spelling variations:
khanh vi » hanh vi, khanh v, nhanh vi
xa khanh » xa thanh, van khanh, dat khanh
cua tre » cua te, cua triet, dua tren
cam tuc » cam xuc, cam tu, nam thuc
sach ky » sac ky, sach y, sach kem
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) or (sach ty)) nang xa hoi. hieu ve cam tuc xa khanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach ty)) nang xa hoi. hieu ve cam tuc xa khanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) or (sach ty)) nang xa hoi. hieu ve cam tuc xa khanh vi ((cua tre) or (cuu tre))*.