Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
lanh manh » lanh tranh, lan anh, van manh
ho chieu » theo chieu, doi chieu, mot chieu
manh cua » doanh cua, ban cua
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty
khan cap » khan ap, than cap, khoan cam

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)) xanh - lanh manh cua tong ((cong san) or (cong tac)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - lanh manh cua tong ((cong san) OR (cong tac)) khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - lanh manh cua tong ((cong san) or (cong tac)) khan cap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - lanh manh cua tong ((cong san) or (cong tac)) khan cap*.