Perhaps you should try some spelling variations:
phong tham » phong kham, chong tham, hong tham
duoc dien » duoc lieu
tham hang » pham hang, thai hang, tham lang
hang cong » dang cong, hang nong, bang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
doc diep » ngoc diep, dac diem, doc hieu
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc diep) or (duoc dien)) tinh - khanh phong tham hang cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc diep) OR (duoc dien)) tinh - khanh phong tham hang cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doc diep) or (duoc dien)) tinh - khanh phong tham hang cong manh toan ban*.