Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
khien ban » khien bang, phien ban, kien ban
khoe quan » khoa quan, khoan quan, khong quan
thanh va » thanh van, hanh va, thanh ha
dang xay » dang van, van xay
viec bac » viec ban, viec bao, viet bac
chi tre » choi tre, cho tre, chi tro
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
sac ky » cac ky, sai ky
va chi » van chi, va che, va cai
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky dang xay hoi. hieu viec bac ((khoe quan) or (khien ban)) thanh va chi tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang xay hoi. hieu viec bac ((khoe quan) OR (khien ban)) thanh va chi tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky dang xay hoi. hieu viec bac ((khoe quan) or (khien ban)) thanh va chi tre*.