Perhaps you should try some spelling variations:
lang van » tang van, hoang van, giang van
dang van » hoang van, hang va
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((lang van) OR (dang van)) hoi. hieu ve cam ((xuc va) or (thuc vat)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((lang van) OR (dang van)) hoi. hieu ve cam ((xuc va) OR (thuc vat)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((lang van) OR (dang van)) hoi. hieu ve cam ((xuc va) or (thuc vat)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sac ky ((lang van) OR (dang van)) hoi. hieu ve cam ((xuc va) or (thuc vat)) hanh vi cuu tre*.