Perhaps you should try some spelling variations:
thiet tinh » thien tinh, thuyet tinh, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hanh manh » hanh mang, hoang manh, thanh minh
lanh manh » lanh tranh, van manh, anh anh
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap
lan anh » van anh, tuan anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tinh - ((hanh manh) or (((lanh manh) OR (lan anh)))) cua nhung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tinh - ((hanh manh) OR (((lanh manh) OR (lan anh)))) cua nhung cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tinh - ((hanh manh) or (((lanh manh) OR (lan anh)))) cua nhung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc thiet tinh - ((hanh manh) or (((lanh manh) OR (lan anh)))) cua nhung cong dan than cao*.