Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
anh tang » anh bang, anh dang, anh nang
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
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 chieu tinh - ((anh tang) or (nhanh thang)) va nhung ((cong dan) OR (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - ((anh tang) OR (nhanh thang)) va nhung ((cong dan) OR (cong tan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - ((anh tang) or (nhanh thang)) va nhung ((cong dan) OR (cong tan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - ((anh tang) or (nhanh thang)) va nhung ((cong dan) OR (cong tan)) toan cao*.