Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
sach tranh » canh tranh
sach toan » hach toan, hoach toan, sach tham
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » doanh cua
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - hanh ((manh cua) or (ban cua)) thong cong ((sach toan) OR (sach tranh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((manh cua) OR (ban cua)) thong cong ((sach toan) OR (sach tranh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((manh cua) or (ban cua)) thong cong ((sach toan) OR (sach tranh)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((manh cua) or (ban cua)) thong cong ((sach toan) OR (sach tranh)) cau*.