Perhaps you should try some spelling variations:
tieng trung » truong trung
luong tieng » luong tien, trong tieng, luong tin
nang luong » nang song
trung dung » ung dung, trung uong, trinh dung
doi chieu » doc hieu, doi chi, mot chieu
hoc thieu » toc thieu, hoc hien
dung canh » dung danh, dung anh, dung doanh
canh van » anh van, can van, cach van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (hoc thieu)) sang - nang luong tieng trung dung canh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) sang - nang luong tieng trung dung canh van ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) sang - nang luong tieng trung dung canh van ban*.