Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
hoc thieu » toc thieu, hoc hien
cong bang » cuong bang, dong bang, hong bang
bang than » bang thanh, ban than, sang than
ho chieu » theo chieu, doi chieu, mot chieu
trang va » hang va
tran van » luan van
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (hoc thieu)) sach - hanh ((trang va) or (tran van)) truong cong bang than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh ((trang va) OR (tran van)) truong cong bang than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - hanh ((trang va) or (tran van)) truong cong bang than ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - hanh ((trang va) or (tran van)) truong cong bang than ban*.