Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
bang cong » dang cong, hang cong, dung cong
bang song » nang song
thai cua » tai cuc, tri cua, dai cua
than cua » nhan cua, ban cua, gian cua
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh ((thai cua) OR (than cua)) ((bang cong) or (bang song)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((thai cua) OR (than cua)) ((bang cong) OR (bang song)) tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh ((thai cua) OR (than cua)) ((bang cong) or (bang song)) tan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((thai cua) OR (than cua)) ((bang cong) or (bang song)) tan toan cao*.