Perhaps you should try some spelling variations:
cong tieng » trong tieng, cong chieng, vung tieng
thanh cham » thanh pham, hanh cham, thanh cha
phan cong » thanh cong
tieng han » tieng anh
dan thanh » dang thanh, danh thanh, ban thanh
doc hieu » hoc thieu, hoc hien
han gian » dan gian, van gian, han giai
gian dan » gian lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) tinh - phan cong tieng han gian dan thanh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) tinh - phan cong tieng han gian dan thanh cham*.