Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
thuat dung » thuat hung, thuat ung, thuat xung
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
tac than » tac thanh, tam than, bac thanh
tac nhan » tao nhan, cac nhan, dac nhan
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 trinh) OR (canh tranh)) thuat dung cong ((tac than) or (tac nhan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - ((hanh trinh) OR (canh tranh)) thuat dung cong ((tac than) OR (tac nhan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - ((hanh trinh) OR (canh tranh)) thuat dung cong ((tac than) or (tac nhan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - ((hanh trinh) OR (canh tranh)) thuat dung cong ((tac than) or (tac nhan)) cau*.