Perhaps you should try some spelling variations:
chieu manh » chieu xanh, hieu manh, chu manh
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
thang va » hang va, trang va, thong va
cong dan » cong san, cong tan, huong dan
toan ban » van ban
tang va » trang va, tang van, tang vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu manh - anh ((tang va) OR (thang va)) thong cong dan ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu manh - anh ((tang va) OR (thang va)) thong cong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu manh - anh ((tang va) OR (thang va)) thong cong dan ((toan tap) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi chieu manh - anh ((tang va) OR (thang va)) thong cong dan ((toan tap) or (toan ban))*.