Perhaps you should try some spelling variations:
tang luan » dung luan
tang dan » tang van, tung dan, tang quan
cam tuc » cam xuc, cam tu, nam thuc
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, ban hanh
hieu su » hieu sau, tieu su, hieu so
va cua » va chua, via cua, ca cua
tuc va » thuc va, truc va, tuc xa
tu sac » tu sach, tu cac, tu san
su cam » su nam, su cao, su can
sac ky » cac ky, sai ky
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: tu sac ky ((tang dan) OR (tang luan)) hoi. hieu su cam tuc va hanh va cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((tang dan) OR (tang luan)) hoi. hieu su cam tuc va hanh va cua te".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((tang dan) OR (tang luan)) hoi. hieu su cam tuc va hanh va cua te*.