Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
doc sach » hoc sach, toc sach, nuoc sach
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
hanh tai » han tai, hinh tai, nhanh thai
hang tai » hang va, dung tai
y nang » ky nang, ly nang, v nang
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach y nang x hoi. hieu van pham duc va ((((hanh tai) or (thanh tai))) or (hang tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y nang x hoi. hieu van pham duc va ((((hanh tai) OR (thanh tai))) OR (hang tai)) cua te.
• Adding a wildcard symbol may retrieve word variants: doc sach y nang x hoi. hieu van pham duc va ((((hanh tai) or (thanh tai))) or (hang tai)) cua te*.