Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
tru nang » tra nang, tri nang, truc nano
thanh va » thanh van, hanh va, thanh ha
hieu van » hieu va, thien van, lieu va
su sach » so sach
xua van » xua va, qua van, cua van
nam xua » nam cua, nam mua, nam qua
tu nang » tu nong, tu nano, tu lang
vu sach » vu bach, vu khach
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (vu sach)) ((tu nang) or (tru nang)) xa hoi. hieu van nam xua van thanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ((tu nang) OR (tru nang)) xa hoi. hieu van nam xua van thanh va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ((tu nang) or (tru nang)) xa hoi. hieu van nam xua van thanh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ((tu nang) or (tru nang)) xa hoi. hieu van nam xua van thanh va cuu tre*.