Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tinh cao » tinh chat, tinh cach, tinh giao
tinh lao » dinh lam, tinh nam, tinh va
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan ban
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 xanh - thanh ((tinh cao) OR (tinh lao)) thuong cong tan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((tinh cao) OR (tinh lao)) thuong cong tan ((toan tai) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((tinh cao) OR (tinh lao)) thuong cong tan ((toan tai) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((tinh cao) OR (tinh lao)) thuong cong tan ((toan tai) or (toan cao))*.