Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
nang ma » tang ma, sang ma, nang cao
va sac » va cac, va suc, va san
sac ky » cac ky, sai ky
ve nam » va nam, le nam, te nam
he nam » ha nam, nghe nam
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: va sac ky nang ma hoa. hieu ((ve nam) OR (he nam)) thuc dan hanh vi cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "va sac ky nang ma hoa. hieu ((ve nam) OR (he nam)) thuc dan hanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: va sac ky nang ma hoa. hieu ((ve nam) OR (he nam)) thuc dan hanh vi cua tu*.