Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cau treo » cau theo, cau tren, cau triet
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cac xuc » cam xuc, chat xuc, cac cuoc
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cam dan » cac dan, ca dan, nam dan
cuu tre » cua tre, cau tren
su sach » so sach, vu sach
dan vi » doan vi, don vi, dan va

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 ky nang xa hoi. hieu viec ((cac xuc) or (cac nuoc)) cam dan vi ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu viec ((cac xuc) OR (cac nuoc)) cam dan vi ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu viec ((cac xuc) or (cac nuoc)) cam dan vi ((cuu tre) OR (cau treo))*".