Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, hinh tai
duc tre » duoc tren, duc tien
cam luc » cam xuc, cau luc
ky danh » ky anh, ky dang
han tai » hang tai, nhan tai, van tai
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
luc va » duc va, tuc va, loc va
sac ky » cac ky, sai ky
ma hoi » mai hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam

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 danh ((ma hoi) OR (xa hoi)). hieu ve cam luc va ((hanh tai) or (han tai)) duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky danh ((ma hoi) OR (xa hoi)). hieu ve cam luc va ((hanh tai) OR (han tai)) duc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky danh ((ma hoi) OR (xa hoi)). hieu ve cam luc va ((hanh tai) or (han tai)) duc tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky danh ((ma hoi) OR (xa hoi)). hieu ve cam luc va ((hanh tai) or (han tai)) duc tre*.