Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hang tai » hang va, dung tai
tu sach » thu sach, su sach, te sach
nam duc » nam duoc, pham duc, nam thuc
hanh va » hang va, hanh vi
tu sac » tu cac, tu san, tu bac
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 van nam duc va ((hang tai) or (hanh va)) 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 van nam duc va ((hang tai) OR (hanh va)) 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 van nam duc va ((hang tai) or (hanh va)) sua chua*".