Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
hoc bac » hoc bai, hoc cac, hoc mac
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc day
danh va » doanh va, hanh va, anh va
ca tren » cau tren, cu tren, la tren
bac ky » cac ky, ban ky, sac ky
va cuu » va cau, va chu, va huu
va ca » va cac, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc bac ky nang xa hoi. hieu va cuu ((thuc va) or (thuc dan)) danh va ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc bac ky nang xa hoi. hieu va cuu ((thuc va) OR (thuc dan)) danh va ca tren.
• Adding a wildcard symbol may retrieve word variants: hoc bac ky nang xa hoi. hieu va cuu ((thuc va) or (thuc dan)) danh va ca tren*.