Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
sang ma » tang ma, nang ma, sang tao
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
van cac » van hac, van cau, van bac
hanh di » hanh vi, hanh de, hang di
vu sach » vu bach, su sach, vu khach
tac va » tac da, tac xa, tuc va
di cau » da cau, diem cau

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 (sang ma)) hoi. hieu van cac ((tac va) or (thuc vat)) hanh di cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((nang xa) OR (sang ma)) hoi. hieu van cac ((tac va) OR (thuc vat)) hanh di cau treo.
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang xa) or (sang ma)) hoi. hieu van cac ((tac va) or (thuc vat)) hanh di cau treo*.