Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh ve » trinh he, trinh va, trinh vi
ve nhung » va nhung, tu nhung
cong dan » cong san, cong tan, cong dong
than cap » khan cap, thanh lap, thanh cac
toan cao » toan ban, toan 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 tinh - hanh trinh ve nhung ((cong dan) OR (huong dan)) ((than cap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh trinh ve nhung ((cong dan) OR (huong dan)) ((than cap) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - hanh trinh ve nhung ((cong dan) OR (huong dan)) ((than cap) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh trinh ve nhung ((cong dan) OR (huong dan)) ((than cap) or (toan cao))*.