Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec cam » viec lam, viec cua, viec va
dang xay » dang van, van xay
cuu tre » cau tren, cau treo
tinh di » tinh doi, trinh di, tinh da
va tinh » may tinh
sach ky » sach y, sach ty, sach kem
xay hoi » xa hoi, tay hoi, cay phoi
cua tre » cua te, cua triet, dua tren
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sac ky)) dang xay hoi. nhieu viec cam xuc va tinh di ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) dang xay hoi. nhieu viec cam xuc va tinh di ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) dang xay hoi. nhieu viec cam xuc va tinh di ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) dang xay hoi. nhieu viec cam xuc va tinh di ((cuu tre) OR (cua tre))*.