Perhaps you should try some spelling variations:
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chao » ve chat, ve cham, ve cho
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sai ky) OR (sac ky)) nang xa hoi. hieu ve chao xu ((ban hanh) or (van hanh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sai ky) OR (sac ky)) nang xa hoi. hieu ve chao xu ((ban hanh) OR (van hanh)) vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sai ky) OR (sac ky)) nang xa hoi. hieu ve chao xu ((ban hanh) or (van hanh)) vi cuu tre*".