Perhaps you should try some spelling variations:
dang xay » dang van, van xay
qua cham » qua hai, qua cac, va cham
ban hang » ngan hang
va trien » va truyen, va tuyen, va tieng
vu sach » vu bach, su sach, vu khach
xay hoi » xa hoi, tay hoi, cay phoi
soc ban » hoc ban, coc ban, so ban
cua tre » cua te, cuu tre, cua triet
y dang » ky dang, 2 dang, _ dang
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y dang xay hoi. hieu qua cham soc ban hang va ((cua tre) or (((va trien) or (va thiet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y dang xay hoi. hieu qua cham soc ban hang va ((cua tre) OR (((va trien) OR (va thiet)))).
• Adding a wildcard symbol may retrieve word variants: vu sach y dang xay hoi. hieu qua cham soc ban hang va ((cua tre) or (((va trien) or (va thiet))))*.