Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
sach thu » sach thue, sach thieu, sach tham
thu sang » thu hang, thu san, thu bang
viec cac » vien cac, viec cua, viec lam
tu sach » thu sach, su sach, te sach
dinh vi » dinh ve, dinh viet, dinh tri
danh va » doanh va, hanh va, anh va
danh vi » hanh vi, danh di, danh viet
cac xuc » cam xuc, cac nuoc, chat xuc
sang xa » song xa, lang xa, sang ma
cu tren » tu tren, dua tren
xuc va » duc va, tuc va, luc va

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 thu sang xa hoi. nhieu viec cac xuc va ((((danh vi) OR (danh va))) or (dinh vi)) cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu sang xa hoi. nhieu viec cac xuc va ((((danh vi) OR (danh va))) OR (dinh vi)) cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu sang xa hoi. nhieu viec cac xuc va ((((danh vi) OR (danh va))) or (dinh vi)) cu tren".
• Adding a wildcard symbol may retrieve word variants: tu sach thu sang xa hoi. nhieu viec cac xuc va ((((danh vi) OR (danh va))) or (dinh vi)) cu tren*.