Perhaps you should try some spelling variations:
trung thong » trung trong, trung thang, truong thuong
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
hoc thieu » hoc hien
cua trung » cua truong, xuan trung, cua nhung
thong van » trong van, thong va, thong quan
van tuan » van quan, van ban, anh tuan
tuan tap » toan tap, tuan tai, tuyen tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) OR (toc thieu)) xanh - ((hanh tranh) or (hanh trinh)) cua trung thong van tuan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - ((hanh tranh) OR (hanh trinh)) cua trung thong van tuan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) xanh - ((hanh tranh) or (hanh trinh)) cua trung thong van tuan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) xanh - ((hanh tranh) or (hanh trinh)) cua trung thong van tuan tap*.