Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hanh trinh » canh tranh, hanh chinh
toc thien » toc thieu, ton thien, duoc thien
ve nhung » tu nhung
cong san » cong tac
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thien danh - hanh trinh ((ve nhung) or (va nhung)) cong san than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thien danh - hanh trinh ((ve nhung) OR (va nhung)) cong san than tap.
• Adding a wildcard symbol may retrieve word variants: toc thien danh - hanh trinh ((ve nhung) or (va nhung)) cong san than tap*.