Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
thanh con » thanh cong, thanh son, thanh cuong
con gian » don gian, con giap, chong gian
gian van » giang van, gian dan, gian lan
van cong » van dong, van phong, phan cong
cong dan » cong san, cong tan, huong dan
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 - thanh con gian van cong dan ((phan van) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu hach - thanh con gian van cong dan ((phan van) OR (phan tu))*.