Perhaps you should try some spelling variations:
toan phan » thanh phan, toan ban, hoa phan
hach toan » thanh toan, manh toan
phan hong » phan cong, pham hong, phan song
thai tu » thai tuc, tai tu, thai xu
tu hach » tu cach, tu hanh, tu sach
tu sac » tu sach, tu cac, tu bac
tu san » thu san, tu ban, vu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu san)) thai tu hach toan phan hong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) thai tu hach toan phan hong*.