Perhaps you should try some spelling variations:
van thanh » ban thanh
hieu van » hieu va, thien van, lieu va
van tuan » van quan, van ban, anh tuan
tuan soc » quan so, xuan son, dan soc
nang xa » nang x, lang xa, nang ma
van anh » tuan anh, van minh
cuu tre » cua tre, cau tren, cau treo
sac ky » sai 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: thuat ((sac ky) or (cac ky)) nang xa hoi. hieu van tuan soc ((van anh) or (van thanh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sac ky) OR (cac ky)) nang xa hoi. hieu van tuan soc ((van anh) OR (van thanh)) vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuat ((sac ky) or (cac ky)) nang xa hoi. hieu van tuan soc ((van anh) or (van thanh)) vi cuu tre*.