Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
chieu sach » chinh sach, chiet tach, chieu sang
thinh dung » trinh dung, tinh dung, thanh dung
duc thinh » duc thanh, quoc thinh, duc minh
dan phan » doan phan, dan chan, van phan
phan duc » pham duc, phan tu, phan dau
dung dat » dung va, dung tai
dat khan » dat khanh, dat thanh, bat khanh
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu quang) or (chieu sach)) - dan phan duc thinh dung dat khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quang) OR (chieu sach)) - dan phan duc thinh dung dat khan cap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quang) or (chieu sach)) - dan phan duc thinh dung dat khan cap*.