Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
phap phan » phap phat, phap hoan, phap luan
tac nhanh » tac nhan, tac thanh, tai nhanh
nhanh cay » nhanh ha, nhanh bac, nhanh va
doc hieu » toc thieu, hoc hien
phan tac » phan tach, phan trac, phan tap
cong va » dong va, cong ha, cong tac
va phap » va phat, ban phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc thieu)) sang - thanh cong va phap phan tac nhanh cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sang - thanh cong va phap phan tac nhanh cay*.