Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
hanh trong » hanh trang, anh trong, hinh trong
sinh trong » sinh truong, sinh trung, dinh trong
hoc thieu » toc thieu, hoc hien
van hung » manh hung, van duong, van dong
van dung » van dong, xay dung, tin dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan 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 thieu quang - ((hanh trong) or (sinh trong)) ((van hung) OR (van dung)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - ((hanh trong) OR (sinh trong)) ((van hung) OR (van dung)) cong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu quang - ((hanh trong) or (sinh trong)) ((van hung) OR (van dung)) cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - ((hanh trong) or (sinh trong)) ((van hung) OR (van dung)) cong tac toan tap*.