Perhaps you should try some spelling variations:
tang thanh » dang thanh, trung thanh, hoang thanh
thuoc sach » hoc sach, nuoc sach, thuat sach
duc tang » duc thang, duc tan, tuc tang
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
ve giao » te giao, viet giao, van giao
san cua » sang cua, ban cua, dan cua
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: ((thu hoach) or (thuoc sach)) ty nang x hoi. hieu ve giao duc tang thanh san cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuoc sach)) ty nang x hoi. hieu ve giao duc tang thanh san cua te.
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuoc sach)) ty nang x hoi. hieu ve giao duc tang thanh san cua te*.