Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
dua tren » dung tren
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
cac xuc » cac nuoc, chat xuc, cac cuoc
cam dan » cac dan, ca dan, nam dan
y nang » ky nang, ly nang, v nang
dan vi » doan vi, don vi, dan va
cua te » cua tu

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 y nang xa hoi. hieu viec ((cac xuc) OR (cam xuc)) cam dan vi ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu viec ((cac xuc) OR (cam xuc)) cam dan vi ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. hieu viec ((cac xuc) OR (cam xuc)) cam dan vi ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu viec ((cac xuc) OR (cam xuc)) cam dan vi ((dua tren) or (cua te))*.