Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
lanh manh » lanh tranh, lan anh, van manh
duong dan » duong dang, huong dan, duong van
doi lieu » duoc lieu, doi chieu, du lieu
cua dang » cua cong, cua ban
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau
ha dong » hoat dong, van dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi lieu tinh - lanh manh ((cua dang) or (ha dong)) duong dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi lieu tinh - lanh manh ((cua dang) OR (ha dong)) duong dan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - lanh manh ((cua dang) or (ha dong)) duong dan phan dau*.