Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
thi cham » thi hai, toc cham, thi ha
thu hang » thi hang, thuc hanh, thu huong
thi nang » thi cong, ki nang, thi hanh
va doanh » van doanh, vay doanh, va danh
tu sach » thu sach, su sach, te sach
van cuu » van cau, van chu, van cu
vu cham » va cham, vu kham, tu cham
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((thu hang) or (thi nang)) xa hoi. hieu ((vu cham) or (thi cham)) xuc va doanh van cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu hang) OR (thi nang)) xa hoi. hieu ((vu cham) OR (thi cham)) xuc va doanh van cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu hang) or (thi nang)) xa hoi. hieu ((vu cham) or (thi cham)) xuc va doanh van cuu tre*.