Perhaps you should try some spelling variations:
chat truc » cau truc, chat xuc
hieu van » hieu va, thien van, lieu va
van chat » cao chat
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, mang xa
va hanh » van hanh, va thanh, va danh
nang ma » tang ma, nang cao, mang may
truc va » thuc va, thuc vat, trung va
sang ma » tang ma, sang tao, mang may
vi cua » vai cua, di cua
su sai » su tai, su hai, su dai
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky ((((nang xa) OR (nang ma))) or (sang ma)) hoi. hieu van chat truc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((((nang xa) OR (nang ma))) OR (sang ma)) hoi. hieu van chat truc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky ((((nang xa) OR (nang ma))) or (sang ma)) hoi. hieu van chat truc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sai ky ((((nang xa) OR (nang ma))) or (sang ma)) hoi. hieu van chat truc va hanh vi cua tre*.