Perhaps you should try some spelling variations:
thanh tung » thanh cong
quang dung » quang trung, ung dung, cuong dung
dat quang » dau quang, chat quang, dang quang
ho chieu » theo chieu, hoc thieu, mot chieu
tung dat » dung dat, vung dat, tung dan
van bac » van ban, van bao, van hac
luan » quan, lan

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 (toc thieu)) tinh - thanh tung dat quang dung luan van bac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (toc thieu)) tinh - thanh tung dat quang dung luan van bac".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (toc thieu)) tinh - thanh tung dat quang dung luan van bac*.