Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
phu da » phu la, phu ha
ve cam » ve cham, ve cac, va cam
da ky » dan ky, dai ky, dia ky
x hoi » xa hoi, o hoi, x ho
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: phu da ky nang ((x hoi) or (o hai)). hieu ve cam duc va thanh than ((cua chu) or (sua chua))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: phu da ky nang ((x hoi) OR (o hai)). hieu ve cam duc va thanh than ((cua chu) OR (sua chua)).
• Adding a wildcard symbol may retrieve word variants: phu da ky nang ((x hoi) or (o hai)). hieu ve cam duc va thanh than ((cua chu) or (sua chua))*.