Perhaps you should try some spelling variations:
thanh thanh » nhanh thanh, thanh toan, thanh phan
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, manh hung
thong cong » trong cong, thong thong, phong chong
trung hua » trung ha, trung hoa, trung cua
tong cong » trong cong, cong cong, dung cong
thanh lap » thanh san, phan lap, thanh hai

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 sach) or (chieu sach)) - manh trung hua ((thong cong) OR (tong cong)) thanh thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (chieu sach)) - manh trung hua ((thong cong) OR (tong cong)) thanh thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (chieu sach)) - manh trung hua ((thong cong) OR (tong cong)) thanh thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (chieu sach)) - manh trung hua ((thong cong) OR (tong cong)) thanh thanh lap*.