Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
quoc lan » quoc ban, nuoc luan, quoc quan
van chat » cao chat
ky tang » ky nang, ky dang, kho tang
xuc ban » duc ban, cuc ban, quoc ban
vi cua » vai cua, di cua
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ma hoi » mai hoi, ma hoa, me hoi
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: tu sai ky tang ((ma hoi) OR (xa hoi)). hieu van chat ((xuc ban) or (quoc lan)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky tang ((ma hoi) OR (xa hoi)). hieu van chat ((xuc ban) OR (quoc lan)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky tang ((ma hoi) OR (xa hoi)). hieu van chat ((xuc ban) or (quoc lan)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sai ky tang ((ma hoi) OR (xa hoi)). hieu van chat ((xuc ban) or (quoc lan)) hanh vi cua te*.