Perhaps you should try some spelling variations:
hoc thien » hoc thieu, hoc thiet, hoc tien
hang luan » tang luan, dung luan
dong cong » duong cong, dung cong, dang cong
hanh lam » thanh lap, hanh kem, hanh va
dan dong » van dong, dan dung, dao dong
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan 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 thien) or (hoc hien)) thanh - ((hanh lam) or (hang luan)) dan dong cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (hoc hien)) thanh - ((hanh lam) OR (hang luan)) dan dong cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) or (hoc hien)) thanh - ((hanh lam) or (hang luan)) dan dong cong san phan cau*.