Perhaps you should try some spelling variations:
hanh dieu » han dieu, hinh dieu, hoang dieu
chat vuc » chat xuc, chat va, chat huu
thu hang » thuc hanh, thu huong, thu trang
dieu cua » dieu tra
thi hang » thi hanh, thi nang, thi thanh
thi hong » thi cong, thi phuong, thi hanh
van hanh » van thanh, ban hanh, van anh
vuc van » duc van, luc van, thuc van
te sach » toc sach
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
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: te sach ((thu hang) or (((thi hang) OR (thi hong)))) xa hoi. hieu va chat vuc van hanh dieu cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu hang) OR (((thi hang) OR (thi hong)))) xa hoi. hieu va chat vuc van hanh dieu cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu hang) or (((thi hang) OR (thi hong)))) xa hoi. hieu va chat vuc van hanh dieu cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((thu hang) or (((thi hang) OR (thi hong)))) xa hoi. hieu va chat vuc van hanh dieu cua te*.