Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh van
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
tu sac » tu cac, tu san, tu bac
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho
chua » cua, chu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) OR (tu sach)) ky nang x hoi. hieu ve cam duc va ((hanh vai) or (hanh tai)) sua chua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang x hoi. hieu ve cam duc va ((hanh vai) OR (hanh tai)) sua chua.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu sach)) ky nang x hoi. hieu ve cam duc va ((hanh vai) or (hanh tai)) sua chua".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu sach)) ky nang x hoi. hieu ve cam duc va ((hanh vai) or (hanh tai)) sua chua*.