Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hieu van » hieu va, thien van, lieu va
hanh van » thanh van, khanh van, hanh va
nam qua » nam quan, nam cua, nam mua
qua ban » cua ban, qua quan
cuu tre » cua tre, cau tren, cau treo
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ((xa hoi) or (ma hoa)). hieu van nam qua ban ((hanh van) or (thanh toan)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ((xa hoi) OR (ma hoa)). hieu van nam qua ban ((hanh van) OR (thanh toan)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ((xa hoi) or (ma hoa)). hieu van nam qua ban ((hanh van) or (thanh toan)) cuu tre*.