Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
hanh van » thanh van, khanh van, hanh san
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
xang ma » tang ma, nang ma, sang ma
hieu va » lieu va, hieu qua
dau xuc » dau xac, dau xua, dau nuoc
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
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: vu sach ty xang ma hoa. ((hieu van) or (hieu va)) dau xuc van ((hanh van) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty xang ma hoa. ((hieu van) OR (hieu va)) dau xuc van ((hanh van) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ty xang ma hoa. ((hieu van) or (hieu va)) dau xuc van ((hanh van) or (hanh va)) cua tre*.