Perhaps you should try some spelling variations:
thanh tung » thanh cong
va phuong » va thuong, cac phuong
khi tinh » khoi tinh, khi sinh, kho tinh
va thong » va thuong, he thong, va cong
cong tac » cong ty
han tap » toan tap, nhan tai, nhan tao
han tai » hang tai, nhan tai, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khi tinh - thanh tung ((va thong) or (va phuong)) cong tac ((han tap) OR (han tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi tinh - thanh tung ((va thong) OR (va phuong)) cong tac ((han tap) OR (han tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi khi tinh - thanh tung ((va thong) or (va phuong)) cong tac ((han tap) OR (han tai))".
• Adding a wildcard symbol may retrieve word variants: doi khi tinh - thanh tung ((va thong) or (va phuong)) cong tac ((han tap) OR (han tai))*.