Perhaps you should try some spelling variations:
thang luong » thang long, hang luong, thuong luong
thieu hach » thien hach, chieu sach, hieu cach
luong gian » luong giao, luong gia, luong giai
gian lang » gian dan
lang cong » dang cong, bang cong, hang cong
cong tan » cong tac, cong san, cong thanh
phan van » pham van, thanh van, luan van
phan lap » phan dau

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 luong gian lang cong tan ((phan van) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu hach - thang luong gian lang cong tan ((phan van) OR (phan lap))*.