Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cau treo » cau theo, cau tren, cau triet
cham tuc » nham thuc, pham thuc, tham thuc
danh vai » danh sai, danh va, dang van
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
ve cham » va cham, ve chat, vu cham
tuc va » thuc va, truc va, tuc xa

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 ((ty nang) or (ty hang)) xa hoi. hieu ve cham tuc va ((danh vai) or (doanh van)) cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty hang)) xa hoi. hieu ve cham tuc va ((danh vai) OR (doanh van)) cau treo.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty hang)) xa hoi. hieu ve cham tuc va ((danh vai) or (doanh van)) cau treo*.