Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
manh trung » manh tung, thanh trung, manh hung
trinh toan » tinh toan, thanh toan, trinh quan
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
trinh han » trinh quan
trung ap » trung cap, trung lap, trung tam
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (hoc thieu)) xanh - manh trung ap dung cong ((trinh toan) OR (trinh han)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) xanh - manh trung ap dung cong ((trinh toan) OR (trinh han)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (hoc thieu)) xanh - manh trung ap dung cong ((trinh toan) OR (trinh han)) ban".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) xanh - manh trung ap dung cong ((trinh toan) OR (trinh han)) ban*.