Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
cam duc » cam xuc, cao duc, pham duc
vai cua » dai cua, hai cua, lai cua
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
duc van » duc va, duc tan, duc manh
sach ky » sach y, sach ty, sach kem
sac ky » cac ky, sai 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: tu ((sach ky) or (sac ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cam duc van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cam duc van hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cam duc van hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang xa hoi. ((hieu ve) OR (hieu van)) cam duc van hanh vai cua te*.