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
nang xa » nang x, lang xa, nang ma
cua tre » cuu tre, cua triet, dua tren
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
su sai » su tai, su hai, su dai
sai ky » sac ky
cua te » cua tu

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