Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh ve, nhanh vi
thanh va » thanh van, hanh va, thanh ha
vu sach » vu bach, su sach, vu khach
ty danh » ty doanh, ty anh, ky danh
xay hoi » tay hoi, cay phoi, gay thoi
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
cam loc » cam lo
ve cam » ve cham, ve cac, va cam
loc va » hoc va, luc va
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: vu sach ty danh ((xay hoi) or (xa hoi)). hieu ve cam loc va ((thanh vi) OR (thanh va)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty danh ((xay hoi) OR (xa hoi)). hieu ve cam loc va ((thanh vi) OR (thanh va)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty danh ((xay hoi) or (xa hoi)). hieu ve cam loc va ((thanh vi) OR (thanh va)) cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ty danh ((xay hoi) or (xa hoi)). hieu ve cam loc va ((thanh vi) OR (thanh va)) cua te*.