Perhaps you should try some spelling variations:
hieu viec » nhieu viec, sieu viet, hieu hien
su sach » vu sach
cam dan » cac dan, ca dan, nam dan
xuc cam » phuc cam
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
dan vi » doan vi, don vi, dan va
vi cuu » vi luu, vinh cuu

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