Perhaps you should try some spelling variations:
thieu dang » thien dang, thieu khang, thieu quang
doc sach » hoc sach, toc sach, nuoc sach
dang xay » dang van, van xay
dieu cua » dieu tra
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
va chat » van chat, va phat, cao chat
va tham » van tham, va cham, va thanh
xay hoi » xa hoi, tay hoi, cay phoi
de cua » le cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach thieu dang xay hoi. hieu ((va tham) or (va chat)) xuc van hanh ((de cua) or (dieu cua)) cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach thieu dang xay hoi. hieu ((va tham) OR (va chat)) xuc van hanh ((de cua) OR (dieu cua)) cu.
• Adding a wildcard symbol may retrieve word variants: doc sach thieu dang xay hoi. hieu ((va tham) or (va chat)) xuc van hanh ((de cua) or (dieu cua)) cu*.