Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
canh trinh » canh tranh, hanh trinh, canh tinh
hoc thieu » toc thieu, hoc hien
trinh qua » trinh quan, trinh cua, trinh quang
dung cong » dung trong
qua dung » quang dung, su dung, qua song
cong san » cong tac
nhanh tu » hanh tu, nhan su, anh tu
nhan tu » phan tu, nhan su, nhin tu

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 - canh trinh qua dung cong san ((nhan tu) OR (nhanh tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - canh trinh qua dung cong san ((nhan tu) OR (nhanh tu))*".