Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
tranh cua » doanh cua, manh cua
dung cong » dung trong
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan tap » nhan tai, nhan tao, han tap
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - hanh ((tranh cua) or (dung luan)) dung cong tac nhan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh ((tranh cua) OR (dung luan)) dung cong tac nhan tap.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh ((tranh cua) or (dung luan)) dung cong tac nhan tap*.