Perhaps you should try some spelling variations:
quan thanh » ban thanh, van thanh
thanh vai » thanh hai, thanh van, thanh tai
hieu van » hieu va, thien van, lieu va
cau treo » cau theo, cau tren, cau triet
te sach » toc sach
nam qua » nam quan, nam cua, nam mua
cuu tre » cua tre, cau tren
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((ma hoi) or (ma hoa)). hieu van nam qua quan thanh vai ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((ma hoi) OR (ma hoa)). hieu van nam qua quan thanh vai ((cuu tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) or (ma hoa)). hieu van nam qua quan thanh vai ((cuu tre) or (cau treo))*.