Perhaps you should try some spelling variations:
chinh trong » chinh cong
hinh trong » dinh trong, sinh trong, binh trong
trong tinh » truong tinh, trong kinh, trong sinh
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
quan dung » quang dung, quan duong, qua dung
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: ((hoc chieu) or (hoc thieu)) xanh - ((hinh trong) OR (chinh trong)) quan dung trong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) xanh - ((hinh trong) OR (chinh trong)) quan dung trong tinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc thieu)) xanh - ((hinh trong) OR (chinh trong)) quan dung trong tinh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) xanh - ((hinh trong) OR (chinh trong)) quan dung trong tinh toan ban*.