Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, ho chieu, mot chieu
va phuong » va thuong, cac phuong
thang cao » thong cao, thang lao, nang cao
va thong » va thuong, he thong, va cong
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (doi chi)) sach - thanh tung ((va thong) OR (va phuong)) cong thanh thang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - thanh tung ((va thong) OR (va phuong)) cong thanh thang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doi chi)) sach - thanh tung ((va thong) OR (va phuong)) cong thanh thang cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) sach - thanh tung ((va thong) OR (va phuong)) cong thanh thang cao*.