Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
quang cong » quang cuong, quang dong, quang hoang
hoc thieu » toc thieu, hoc hien
trong tap » trong thap, tong tap, trong tai
trong tan » trong quan, trong cac, trong ca
ho chieu » theo chieu, doi chieu, mot chieu
toan cao » toan ban, toan tap

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 (hoc thieu)) sach - thanh tran quang cong ((trong tap) OR (trong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh tran quang cong ((trong tap) OR (trong tan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - thanh tran quang cong ((trong tap) OR (trong tan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh tran quang cong ((trong tap) OR (trong tan)) toan cao*.