Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh manh » hanh mang, lanh manh, hoang manh
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong tap » cuong tap, cong tac, tong tap
cong tan » cong tac, cong san, cong thanh
toan ban » van 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 chieu tinh - hanh manh ((cua dung) or (qua dung)) ((cong tap) OR (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh manh ((cua dung) OR (qua dung)) ((cong tap) OR (cong tan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh manh ((cua dung) or (qua dung)) ((cong tap) OR (cong tan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh manh ((cua dung) or (qua dung)) ((cong tap) OR (cong tan)) toan ban*.