Perhaps you should try some spelling variations:
phan bien » phan kien, phan tien, phan bon
bien cua » ben cua, bien sua, bieu cua
thu sac » thu sach, thu san, thu xac
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
va cao » va cac, va co, va dao
suc va » duc va, tuc va, soc va
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, va hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky dang ((ha hoi) or (xa hoi)). hieu va cao ((suc va) or (luc va)) phan bien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky dang ((ha hoi) OR (xa hoi)). hieu va cao ((suc va) OR (luc va)) phan bien cua te.
• Adding a wildcard symbol may retrieve word variants: thu sac ky dang ((ha hoi) or (xa hoi)). hieu va cao ((suc va) or (luc va)) phan bien cua te*.