Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh di » hanh vi, hanh de, danh di
hang di » hang doi, hang vi, hang dien
van cam » van nam, van lam, van cau
nang o » nang co, nang ho, nang ro
lanh y » hanh y, lanh lay
cam tu » cam thu, nam tu, dam tu
anh y » hanh y, anh d, anh _
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: thuat ((lanh y) OR (anh y)) nang o hoi. hieu van cam tu va ((hanh di) or (hang di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((lanh y) OR (anh y)) nang o hoi. hieu van cam tu va ((hanh di) OR (hang di)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((lanh y) OR (anh y)) nang o hoi. hieu van cam tu va ((hanh di) or (hang di)) cua triet".
• Adding a wildcard symbol may retrieve word variants: thuat ((lanh y) OR (anh y)) nang o hoi. hieu van cam tu va ((hanh di) or (hang di)) cua triet*.