Perhaps you should try some spelling variations:
cap hoang » cam hoang, cau hoang, van hoang
hieu van » hieu va, thien van, lieu va
cam doan » chan doan, cac doanh, cam hoang
vu sach » vu bach, su sach, vu khach
vai cua » dai cua, hai cua, lai cua
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
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 ((nang xa) or (nang ma)) hoi. hieu van cac xuc ((cam doan) or (cap hoang)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((nang xa) OR (nang ma)) hoi. hieu van cac xuc ((cam doan) OR (cap hoang)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang xa) or (nang ma)) hoi. hieu van cac xuc ((cam doan) or (cap hoang)) vai cua tre*.