Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
danh hai » dang hai, lanh hai, manh hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua cu, cua te
cua su » qua su
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: te sach ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va danh hai ((cua tu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va danh hai ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va danh hai ((cua tu) or (cua su))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. ((hieu van) OR (hieu va)) cam xuc va danh hai ((cua tu) or (cua su))*.