Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
thang va » hang va, trang va, thong va
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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: hoc chieu tinh - hanh ((tang va) OR (thang va)) nhung ((cong dan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh ((tang va) OR (thang va)) nhung ((cong dan) OR (cong san)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh ((tang va) OR (thang va)) nhung ((cong dan) or (cong san)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh ((tang va) OR (thang va)) nhung ((cong dan) or (cong san)) toan ban*.