Perhaps you should try some spelling variations:
thinh tai » chinh tai, trinh tai, thanh tai
dang cau » hang cau, bang cau, dang mau
hinh tai » chinh tai, hinh thai, hinh bai
cac xuc » cam xuc, cac nuoc, chat xuc
duc tre » duoc tren, duc tien
sach ty » sach tu, sach thu, xach tay
hieu ve » hieu va, hieu van
cau hoa » cau hoi
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ty) OR (sach y)) dang cau hoa. hieu ve cac xuc va ((hinh tai) or (thinh tai)) duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ty) OR (sach y)) dang cau hoa. hieu ve cac xuc va ((hinh tai) OR (thinh tai)) duc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ty) OR (sach y)) dang cau hoa. hieu ve cac xuc va ((hinh tai) or (thinh tai)) duc tre".
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) OR (sach y)) dang cau hoa. hieu ve cac xuc va ((hinh tai) or (thinh tai)) duc tre*.