Perhaps you should try some spelling variations:
thuat cac » thuat cam, thuat cao, thuat ca
thuat cat » thuat cam, thuat vat, thuat cao
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat luu » chat huu, chat lua, hat luu
van hanh » van thanh, ban hanh, van anh
dua tren » dung tren
luu van » cuu van, luan van, luu hanh
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat cac) or (thuat cat)) ky nang x hoi. hieu van chat luu van hanh vi ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat cac) OR (thuat cat)) ky nang x hoi. hieu van chat luu van hanh vi ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((thuat cac) or (thuat cat)) ky nang x hoi. hieu van chat luu van hanh vi ((dua tren) or (cua te))*.