Perhaps you should try some spelling variations:
chang dong » chuong dong, cong dong, chan dung
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
hanh hang » thanh hang, hang hang, hanh han
hang tai » hang va, dung tai
dan dung » van dung, tin dung, ap dung
san cau » van cau, ban cau, can cau

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 - hanh hang tai ((chang dong) or (dan dung)) thanh san cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh hang tai ((chang dong) OR (dan dung)) thanh san cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh hang tai ((chang dong) or (dan dung)) thanh san cau*.