Perhaps you should try some spelling variations:
thuong duong » tuong duong, thuong luong, chuong duong
theo luong » tien luong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet anh » thien anh, thuyet anh, thien danh
quang cao » nang cao, quang nam
cong tac » cong ty
tuan cao » toan cao, juan cao, thuan cam

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 anh - thanh cong tac ((thuong duong) or (theo luong)) anh ((tuan cao) OR (quang cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet anh - thanh cong tac ((thuong duong) OR (theo luong)) anh ((tuan cao) OR (quang cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet anh - thanh cong tac ((thuong duong) or (theo luong)) anh ((tuan cao) OR (quang cao))*".