Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh
bien tinh » bi tinh, yen tinh, diep tinh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
sinh va » sinh vat, tinh va, dinh van

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