Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang ha » long ha
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((lang ha) or (nang x)) hoi. ((hieu va) or (hieu van)) cam tuc va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((lang ha) OR (nang x)) hoi. ((hieu va) OR (hieu van)) cam tuc va hanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((lang ha) or (nang x)) hoi. ((hieu va) or (hieu van)) cam tuc va hanh vai cuu tre*.