Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
sach thu » sach thue, sach thieu, sach tham
tu sach » thu sach, su sach, te sach
thu ban » thu hang
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai
ban xa » ban va, ban ma, ban da
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: tu sach thu ban xa hoi. hieu ((((va cam) OR (va cao))) or (vien cac)) xuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu ban xa hoi. hieu ((((va cam) OR (va cao))) OR (vien cac)) xuc va danh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu ban xa hoi. hieu ((((va cam) OR (va cao))) or (vien cac)) xuc va danh vi cua te*".