Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
hang tai » dung tai
mai khoi » mai khoa, cac khoi, dai khoa
tai khoa » da khoa, noi khoa
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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 ky tang ((mai khoi) OR (tai khoa)). hieu ve cham duc va ((hang tai) or (hang va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang ((mai khoi) OR (tai khoa)). hieu ve cham duc va ((hang tai) OR (hang va)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang ((mai khoi) OR (tai khoa)). hieu ve cham duc va ((hang tai) or (hang va)) cuu tre*".