Perhaps you should try some spelling variations:
tdinh trong » trinh trong, chinh trong, sinh trong
dinh trong » sinh trong, chinh trong, dinh thuong
cong thanh » dong thanh, cong trinh, truong thanh
hieu lang » chieu sang, hieu quang, nhieu tang
thu nhung » thuc nhung, thi nhung, tu nhung
cong tan » cong tac, cong san, cong ty
phan cau » phan dau, phan cac, phan tu
ho hieu » ho chieu, hoi hieu, nho hieu

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 lang - ((tdinh trong) or (dinh trong)) thu nhung ((cong tan) OR (cong thanh)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((tdinh trong) OR (dinh trong)) thu nhung ((cong tan) OR (cong thanh)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((tdinh trong) or (dinh trong)) thu nhung ((cong tan) OR (cong thanh)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((tdinh trong) or (dinh trong)) thu nhung ((cong tan) OR (cong thanh)) phan cau*.