Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cuoc tuc » cuoi thuc, nuoc thuc, duoc tu
cua tre » cua te, cuu tre, dua tren
tinh ca » tinh cao, tinh cua, tinh va
xa tinh » va tinh, ha tinh, ca tinh
ve cuoc » va cuoc, ve duoc, ve nuoc
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, va hoi
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky dang ((ha hoi) OR (xa hoi)). hieu ve cuoc tuc xa tinh ca ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang ((ha hoi) OR (xa hoi)). hieu ve cuoc tuc xa tinh ca ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky dang ((ha hoi) OR (xa hoi)). hieu ve cuoc tuc xa tinh ca ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sac ky dang ((ha hoi) OR (xa hoi)). hieu ve cuoc tuc xa tinh ca ((cua tre) or (cua triet))*.