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
vu sach » vu bach, su sach, vu khach
xac va » tac va, ac va, bac va
vi cau » va cau, ve cau, di 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 ((xac va) or (thuc vat)) hanh vi 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 ((xac va) OR (thuc vat)) hanh vi cau treo.
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang xa) or (sang ma)) hoi. hieu van cac ((xac va) or (thuc vat)) hanh vi cau treo*.