Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
cau tren » cu tren, dau tren, ca tren
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
bac ky » cac ky, ban ky, sac ky
va cuu » va chu, va huu
va cau » van cau, va cac, va dau

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 cau 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 cau 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 cau tren*.