Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
thanh di » thanh doi, thanh de, thanh do
tu sang » thu sang, tu lang, tu quang
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
nang o » nang co, nang ho, nang ro
tu san » thu san, tu ban, tu can
cua te » cua tu
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: ((tu sang) OR (tu san)) ky nang o hoi. hieu va cam duc va ((thanh di) or (thanh ve)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sang) OR (tu san)) ky nang o hoi. hieu va cam duc va ((thanh di) OR (thanh ve)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sang) OR (tu san)) ky nang o hoi. hieu va cam duc va ((thanh di) or (thanh ve)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sang) OR (tu san)) ky nang o hoi. hieu va cam duc va ((thanh di) or (thanh ve)) cua te*.