Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cau tren » cu tren, dau tren, ca tren
viec cac » vien cac, viec cua, viec lam
cam doan » chan doan, cac doanh, cam hoang
cuu tre » cua tre, cau treo
doan vi » doan va, don vi, doan thi
xuc cam » phuc cam
su sach » so sach
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
cac xuc » cam xuc, cac nuoc, chat xuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) ky nang xa hoi. hieu viec cac xuc cam doan vi ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang xa hoi. hieu viec cac xuc cam doan vi ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky nang xa hoi. hieu viec cac xuc cam doan vi ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang xa hoi. hieu viec cac xuc cam doan vi ((cuu tre) OR (cau tren))*.