Perhaps you should try some spelling variations:
manh thong » anh thong, manh tuong, mang thong
thieu xanh » chieu xanh, thien anh, thien danh
thong gian » khong gian, thong giao, chong gian
lang duong » lang dong, lang muong, lang tuong
hieu manh » chieu xanh, hieu nganh, dieu hanh
gian lang » gian dan
duong van » duong va, luong va, dang van
dong tai » dung tai, luong tai, cong tac

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 xanh) or (hieu manh)) - manh thong gian lang duong van dong tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - manh thong gian lang duong van dong tai.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - manh thong gian lang duong van dong tai*.