Perhaps you should try some spelling variations:
duc tuan » duc thuan, duc tan, duc toan
than cua » nhan cua, ban cua, gian cua
thai cua » tai cuc, tri cua, dai cua
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
su sai » su tai, su hai, su dai
va cam » va cham, va cac, va cao
sai ky » sac ky
ve cam » ve cham, ve cac, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc tuan anh ((thai cua) or (than cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc tuan anh ((thai cua) OR (than cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc tuan anh ((thai cua) or (than cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc tuan anh ((thai cua) or (than cua)) tre*.