Perhaps you should try some spelling variations:
sang cao » nang cao, sang tao, sang cho
cao hoat » cac hoat, co hoat, cao chat
va danh » va dinh, va hanh, dia danh
sach tu » sach thu, cach tu, sach uu
hieu ve » hieu va, hieu van
sach ty » sach y, sach thu, xach tay
cac xuc » cam xuc, cac nuoc, chat xuc
vi cua » vai cua, di cua
va dan » ca dan, va dao, va dau
ve cac » va cac, vien cac
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: su ((sach ty) OR (sach tu)) sang cao hoat. hieu ve cac xuc ((va danh) or (va dan)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) sang cao hoat. hieu ve cac xuc ((va danh) OR (va dan)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach tu)) sang cao hoat. hieu ve cac xuc ((va danh) or (va dan)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach tu)) sang cao hoat. hieu ve cac xuc ((va danh) or (va dan)) vi cua te*.