Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh hang » thanh hang, hang hang, hanh han
va phuong » va thuong, cac phuong
cong dan » cong san, cong tan, huong dan
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban
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 hang va phuong cong dan ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh hang va phuong cong dan ((toan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh hang va phuong cong dan ((toan tai) or (toan tap))*.