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
vu san » va san, vu ban
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa
ve nam » he nam, va nam, te nam
le nam » ly nam, he nam, le na
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu san ky nang ma hoi. hieu ((ve nam) or (le nam)) thuc dan hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky nang ma hoi. hieu ((ve nam) OR (le nam)) thuc dan hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: vu san ky nang ma hoi. hieu ((ve nam) or (le nam)) thuc dan hanh vi cua te*.