Perhaps you should try some spelling variations:
hoang van » hang va
thanh tai » thanh hai, thanh toan, doanh tai
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
tai cua » thai cua, tai cuc, tri cua
cau luc » cau truc, cau phuc
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
dang xa » dang xay, lang xa, dang ha
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 ky ((dang xa) or (hoang van)) hoi. hieu va ((cau luc) or (cam xuc)) va thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((dang xa) OR (hoang van)) hoi. hieu va ((cau luc) OR (cam xuc)) va thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((dang xa) or (hoang van)) hoi. hieu va ((cau luc) or (cam xuc)) va thanh tai cua tre*.