Perhaps you should try some spelling variations:
thong trong » thuong trong, thong thong, thong thuong
hanh trinh » canh tranh, hanh chinh
hoc khien » hoc hien, hoc nghien, hoc vien
hoc thieu » toc thieu, hoc hien
trinh han » trinh quan
han thong » han thuong, hang thong, nhan thong
trong van » trong cac
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc khien) or (hoc thieu)) tinh - hanh trinh han thong trong van tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc khien) OR (hoc thieu)) tinh - hanh trinh han thong trong van tuan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc khien) or (hoc thieu)) tinh - hanh trinh han thong trong van tuan ban*.