Perhaps you should try some spelling variations:
thuyet mach » thuyet xac, thuyet cac, thuyet anh
thuat mach » thuat sach, thuat tach, thuat lanh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
thuat tac » thuat tach, thuat tao, thuat tai
trinh qua » trinh quan, trinh cua, trinh quang
qua nhung » quan nhung, cua nhung, qua chung
cong van » cong vang, cong san, song van
van van » tan van, san van, van vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((thuat mach) OR (thuyet mach))) or (thuat tac)) - hanh trinh qua nhung cong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((thuat mach) OR (thuyet mach))) OR (thuat tac)) - hanh trinh qua nhung cong van van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((thuat mach) OR (thuyet mach))) or (thuat tac)) - hanh trinh qua nhung cong van van ban".
• Adding a wildcard symbol may retrieve word variants: ho ((((thuat mach) OR (thuyet mach))) or (thuat tac)) - hanh trinh qua nhung cong van van ban*.