Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh hai » dang hai, lanh hai, manh hai
van cam » van nam, van lam, van cau
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
xuc va » tuc va, luc va, xac va
cua tu » cua tuc, cua cu, cua te
cua su » qua su
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang o hoi. hieu van cam ((xuc va) OR (duc va)) danh hai ((cua tu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang o hoi. hieu van cam ((xuc va) OR (duc va)) danh hai ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang o hoi. hieu van cam ((xuc va) OR (duc va)) danh hai ((cua tu) or (cua su))".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang o hoi. hieu van cam ((xuc va) OR (duc va)) danh hai ((cua tu) or (cua su))*.