Perhaps you should try some spelling variations:
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan, thuc day
va cham » va chat, va tham
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hang ca » hang va, nang cao, hang tai
hang ma » hang va, tang ma, nang ma
tuc va » truc va, tuc xa, duc va
vi cua » vai cua, di cua
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 ((hang ma) or (hang ca)) hoi. hieu va cham ((tuc va) OR (thuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((hang ma) OR (hang ca)) hoi. hieu va cham ((tuc va) OR (thuc va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((hang ma) or (hang ca)) hoi. hieu va cham ((tuc va) OR (thuc va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((hang ma) or (hang ca)) hoi. hieu va cham ((tuc va) OR (thuc va)) hanh vi cua te*.