Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
cam luc » cam xuc, cau luc
sach lo » sach dao, sach doi, sach hoi
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
va dan » va dao, va dau, va dap
ca dan » cac dan, ca dao
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam

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 lo ((lang xa) or (nang ma)) hoi. hieu ve cam luc ((va dan) OR (ca dan)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach lo ((lang xa) OR (nang ma)) hoi. hieu ve cam luc ((va dan) OR (ca dan)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach lo ((lang xa) or (nang ma)) hoi. hieu ve cam luc ((va dan) OR (ca dan)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach lo ((lang xa) or (nang ma)) hoi. hieu ve cam luc ((va dan) OR (ca dan)) vi cua tre*.