Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
cac xuc » cam xuc, cac nuoc, chat xuc
xuc cam » phuc cam
cam dan » cac dan, ca dan, nam dan
vi cau » va cau, ve cau, viet cau
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang x ho. hieu viec cac xuc cam dan ((vi cau) or (di cau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x ho. hieu viec cac xuc cam dan ((vi cau) OR (di cau)) tren.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x ho. hieu viec cac xuc cam dan ((vi cau) or (di cau)) tren*.