Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
thang cong » thanh cong, thang long, thong cong
cong gian » chong gian, con gian, cong giao
gian dan » gian lang
dan dong » van dong, dan dung, dao dong
dong dan » dong danh, duong dan, dong san
phan lap » phan dau
phan van » pham van, thanh van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu hach - thang cong gian dan dong dan ((phan lap) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu hach - thang cong gian dan dong dan ((phan lap) OR (phan van))*.