Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thuat dung » thuat hung, thuat ung, thuat song
thuat xung » thuat hung, thuat ung, thuat song
trinh toan » tinh toan, thanh toan, trinh han
hanh minh » thanh minh, hinh minh, hanh tinh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu quang - hanh minh ((thuat dung) OR (thuat xung)) cong trinh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu quang - hanh minh ((thuat dung) OR (thuat xung)) cong trinh toan ban".
• Adding a wildcard symbol may retrieve word variants: toc thieu quang - hanh minh ((thuat dung) OR (thuat xung)) cong trinh toan ban*.