Perhaps you should try some spelling variations:
hoat tinh » hoa tinh, ha tinh, hoi tinh
sinh hoat » sinh hoc, sinh vat
tap hinh » tap kinh, tap tinh, tai chinh
kinh f.c » kinh hoc, kinh bac, kinh doc
tai sinh » tai dinh, tai chinh, phai sinh
tinh hoc » sinh hoc, tin hoc, hinh hoc
hinh va » chinh va, hanh va, tinh va
va kinh » va tinh, qua kinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tap hinh va kinh f.c. ) or ( tai sinh hoat tinh hoc. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tap hinh va kinh f.c. ) OR ( tai sinh hoat tinh hoc. )).
• Adding a wildcard symbol may retrieve word variants: (( tap hinh va kinh f.c. ) or ( tai sinh hoat tinh hoc. ))*.