Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
vat nhung » va nhung, vap nhung, vai nhung
cong hach » cong sach, cong khanh, trong hach
cong tan » cong tac, cong san, cong ty
toan cau » toan cao, toan ban, toan tap
ha tinh » va tinh, may tinh
ho ha » pho ha, ho hap, o ha

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ha tinh - hanh sinh vat nhung ((cong hach) OR (((cong thanh) OR (cong tan)))) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ha tinh - hanh sinh vat nhung ((cong hach) or (((cong thanh) OR (cong tan)))) toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ha tinh - hanh sinh vat nhung ((cong hach) or (((cong thanh) OR (cong tan)))) toan cau*.