Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
nang xa » nang x, lang xa, nang ma
so sac » so sach, so dac
sac ky » cac ky, sai ky
qua am » quan am, qua ap, cua am
vi cua » vai cua, di cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang xa hoi. hieu qua am thuc dan hanh vi cua su~.
• Adding a wildcard symbol may retrieve word variants: so sac ky nang xa hoi. hieu qua am thuc dan hanh vi cua su*.