Perhaps you should try some spelling variations:
duong thai » duong thi, duong tai, duong hai
dung thai » dung tai, dung hai, dung thi
nam thuc » nam thuoc, am thuc, nam thu
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, dam thuc
tu sac » tu sach, tu cac, tu san
cua te » cua tu
sac ky » cac ky, sai ky

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 dang ha noi. hieu va ((cam tuc) or (nam thuc)) va ((dung thai) OR (duong thai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang ha noi. hieu va ((cam tuc) OR (nam thuc)) va ((dung thai) OR (duong thai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky dang ha noi. hieu va ((cam tuc) or (nam thuc)) va ((dung thai) OR (duong thai)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang ha noi. hieu va ((cam tuc) or (nam thuc)) va ((dung thai) OR (duong thai)) cua te*.