Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
chinh cua » chinh ca, hinh cua, chinh luan
chinh sua » chinh su, chinh luan, hinh su
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (theo chu)) xanh - hanh ((chinh cua) OR (chinh sua)) dung cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chu)) xanh - hanh ((chinh cua) OR (chinh sua)) dung cong san than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chu)) xanh - hanh ((chinh cua) OR (chinh sua)) dung cong san than cap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chu)) xanh - hanh ((chinh cua) OR (chinh sua)) dung cong san than cap*.