Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
cua viet » ca viet, hoa viet, cua vat
cao hoi » cau hoi, co hoi, cao hoc
hieu he » hieu ve, hiem he, hieu le
sai cua » dai cua, hai cua, lai cua
tu sac » tu sach, tu cac, tu bac
tu san » thu san, tu ban, tu can
he nam » ha nam, nghe nam
thu xa » thu xac, thu ha, thu ba

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)) ky nang cao hoi. hieu he nam ((thu xa) OR (thu xe)) danh sai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky nang cao hoi. hieu he nam ((thu xa) OR (thu xe)) danh sai cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu san)) ky nang cao hoi. hieu he nam ((thu xa) OR (thu xe)) danh sai cua viet*".