Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
hanh tai » thanh tai, hang tai, han tai
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
cua tre » cua te, cuu tre, cua triet

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 thu ((nang ma) OR (tang ma)) hoa. hieu van cau xuc van ((hanh tai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu ((nang ma) OR (tang ma)) hoa. hieu van cau xuc van ((hanh tai) OR (hanh va)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu ((nang ma) OR (tang ma)) hoa. hieu van cau xuc van ((hanh tai) or (hanh va)) cua tre*".