Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
tinh chuan » trinh chuan, tinh chua, tieu chuan
hoc thuat » hoc thuyet, hoc thuc, hoc chat
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
thang ban » hang ban, tang ban, thanh ban
ban hang » ngan hang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thuat lanh - canh tinh chuan ((dung cong) or (dang cong)) thang ban hang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuat lanh - canh tinh chuan ((dung cong) OR (dang cong)) thang ban hang.
• Adding a wildcard symbol may retrieve word variants: hoc thuat lanh - canh tinh chuan ((dung cong) or (dang cong)) thang ban hang*.