Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
dung vuong » duong vuong, hung vuong, dung luong
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
vuong van » duong van, luong van, muong van
ho chieu » theo chieu, doi chieu, mot chieu
vat dung » van dung, va dung, viet dung
toan tai » toan tap, doanh tai, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - hanh trinh vat dung vuong van ((toan tai) or (tuyen tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - hanh trinh vat dung vuong van ((toan tai) OR (tuyen tap)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - hanh trinh vat dung vuong van ((toan tai) or (tuyen tap))*.